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    Just 20 Brilliant Two-In-One Products That Are Extremely Useful

    Jewelry that opens bottles with the flick of a finger and a keychain that opens doors for you? We'll take two of each.

    We hope you love the products we recommend! All of them were independently selected by our editors. Just so you know, BuzzFeed may collect a share of sales or other compensation from the links on this page if you decide to shop from them. Oh, and FYI — prices are accurate and items in stock as of time of publication.

    1. A rechargeable hand warmer that can also charge your phone. Let's face it, I've never met a mitten that kept my hand warm, disposable hand warmers are costly over time, and my TikTok habit constantly drains my cell battery — this little guy can heat up to 131 degrees Fahrenheit in seconds, keep your prized iPhone/Android juiced, and one charge lasts four to eight hours.,

    Promising review: "This product is great. I moved to Baltimore for school and last winter I was freezing, my fingers felt like ice sticks. But thankfully for this product so far it’s been much more bearable. The second best part is that this is also a power bank. There’s nothing like warming your hands and charging your phone at the same time!! Thank you to the creator of this product." —Yosef Chaim Noorani

    Get it from Amazon for $27.99 (available in eight different designs).

    2. A splurge-worthy exercise desk bike because my dedication to Chloe Ting's at home workouts have sadly waned. If pushing yourself to move your muscles once you're done with the work day seems impossible, than this desk is for you — you'll be exercising your brain and body at the same darn time.,

    The exercise bike is Bluetooth-enabled, foldable, comes with 24 preset workout programs, and 24 level tensions.

    Promising review: "I wasn't sure how I'd like this bike, but it is amazingly comfortable and I've found myself pedaling for miles on the first day I used it. I also wasn't sure how well I'd be able to work while pedaling, but I find I am actually more productive while on the bike. Great product, I'd highly recommend it! I do hours of programming work every day, and this will be key to helping me stay healthy while doing so!" —Rescue Me!

    Get it from Amazon for $258.65.

    3. A stylish tote with vegan leather straps that you can use as a shoulder bag *or* a backpack. Perfect for when your impromptu Target trip turns into a haul, your poor shoulder will thank you for utilizing the backpack option.

    Promising review: "I'm hard on purses and no longer feel the need to order expensive brand-name purses. I want practical, functional use and this purse provides what I need. It is very roomy and fully lined. The purse converts easily to a backpack." —mhborjon

    Get it from Amazon for $27.99 (available in seven colors).

    4. An outlet shelf so you can save space, keep your electronics charging without putting them on the the floor/table, and add decor (think succulents). There's also a little compartment inside the shelf to store unsightly wires!,

    Promising review: "Wow. I was skeptical at first because there were no pics of the Echo, just the Dot. I’m so glad I purchased this. Not only did it free up counter space, it actually looks good. I will say though, I had to use the lower plug because there wasn’t enough headroom to use the top. I banded the cord and it fit perfectly inside the cable channel for a clean look. I’d definitely recommend!" —Jill in Houston

    Get it from Amazon for $14.99 (available in two colors).

    5. A beautiful faux clay vase and potted plant litter box that you'll want to show off instead of hiding in the bathroom. The only thing better than the design is its filtered vented system that controls odor and dust — some reviewers have even turned the inside into a bed for their cats!

    Reviewer cat using kitty litter box plant

    Promising review: "My cat and I love this litter box! It's very attractive and hides the fact there is a litter box in my homes foyer — the only place I really had room to place it. Everyone who has come to my home doesn't realize what it is unless I tell them, then they are impressed and think it's really cool! The space inside is very large an it took almost a full 20-lb box of litter to fill it. I'm not using a liner in mine as don't feel it's necessary." —LA_Sinatra

    Get it from Amazon for $62.45.

    6. A cozy Bluetooth knit beanie with a built-in mic so you can listen to your Spotify playlist without headphones, make hands-free calls, and keep your head warm. The cap is machine washable and allows for seven hours of talk and play time!,

    Promising review: "I'm a bit impatient with gadgets, but this one is easily connected with my phone. It’s easy to use and has nice sound quality. Great and hassle-free for listening to music while keeping your head warm. I love that the module’s rechargeable and removable, and the hat is washable." —Mel

    Get it from Amazon for $14.99 (available in two colors).

    7. A hair clip that deserves a round of applause for its many talents. It can be used as a nail file, ruler, screwdriver, wick holder, keychain, wire stripper, bottle opener and of course, as a gentle hair clip for your gorgeous mane.,

    Promising review: It was hard for me to justify spending $9 on a barrette but it soon proved so useful I didn't care. I wear it every day and I've used all the functions except the ruler. The serrated edge isn't very sharp but it cuts through yarn which is all I need. I was skeptical about the bottle opener but it works great, and it also doubles as a nail cleaner. Plus it's a lot bigger and stronger than a regular barrette which is good for people like me with thick hair. After a few weeks of use the paint is coming off the areas I use the most but all in all it's a great product and I would recommend it, even just to use as a conversation starter.." —Amazon Customer

    Get a two-pack from Amazon for $18.95.

    8. A no-touch brass keychain door opener and stylus — aka you'll never have to touch a digital screen or door handle in public ever again. Use this instead of your hands at the ATM or to enter stores, then easily clip to your hip or place in your pocket.

    Four photos of model using keychain in different ways

    Promising review: "This tool is perfect during the COVID pandemic or just tying to keep your hands clean. It prevents touching public surfaces unnecessarily by creating an extension of your finger to push buttons, pull, turn, and write as a stylist when making those credit card purchases and needing to sign on the machine. Made of durable metal and comes with a retractable keychain holder so that it won’t get lost." —JMB671

    Get it from Amazon for $5.99.

    9. A chain ring bottle opener that makes enjoying a bottle of brew or 'booch a breeze. The high quality stainless-steel material ensures it doesn't rust, lose color, or dent for a long time.

    Promising review: "This design is so cool. All my friends at a party were all asking about where I got this. It is also easy to open bottles." —Tanya

    Get it from Amazon for $5.12 (available in sizes 7—12 and in three colors).

    10. A velvet storage ottoman with a removable lid big enough to comfortably lay your feet on top and fit snacks, a remote, and a blanket inside — aka all the Netflix binge session staples.,

    Promising review: "Love it! This is the second one I have purchased; the first was a purple one. Nice storage and doubles for extra table-tops and seating. I have placed trays on top to use for service. As with the purple one (see my review and photo there) — I did not use the legs. I think it looks better without them. Also, if used for a foot rest it is more comfortable without them as the raise the level too high. The color shown in the seller's photo is exact. Super happy with these." —DIY Queen

    Get it from Amazon for $107.40 (available in twelve colors).

    11. An uber cute iPhone case that doubles as a wallet — now you don't have to awkwardly stuff your cell into a clutch to avoid carrying a bigger bag.,

    Promising review: "This is an amazing tool and so useful! I’m able put my license, credit card, and some money on me at all times! The smaller strap is easy to handle and I can easily maneuver while texting! It is also protective of my screen and beautiful! Great product." —Deedee

    Get it from Amazon for $12.87 (available thirteen different colors and compatible with iPhone 6—iPhone XR).

    12. A quiet portable humidifier and night light to remove dust and allergens, plus help relieve dry nose and throat. And the LED lights really steal the show! They come in seven calming colors that are perfect for late-night bathroom trips and car rides.

    Reviewer using humidifier night light on desk

    Promising review: "I love this thing! Between the dry winter air and the blasting heat in my car, my airway was getting very dry and irritated. This has really helped! It's small and fits right in the cup holder, and it puts out a good amount of steam. You have the option of turning on the color changing light or not, as well as setting it on one solid color. My kids enjoy the light!" —Lynne

    Get it from Amazon for $16.88.

    13. An over-the-sink strainer board that makes food prep quick and clean. The board allows for draining pasta, plus washing and chopping meats, veggies, and fruits in one quick motion.

    Strainer cutting board in use over kitchen sink

    Promising review: "This is an extremely useful cutting board with the collapsible bowl for washing vegetables and/or fruits, draining them, or depositing scraps. It fits nicely over my sink and is easily cleaned and stored. Find myself using it every day!" —Patty Boh

    Get it from Amazon for $19.99 (available in two colors).

    14. Paula's Choice sunscreen and hydrating moisturizer with chamomile and vitamin E that minimizes pores, firms skin, and protects from the sun's harmful UVA/UVB rays (because even on cloudy winter days, the sun can still do damage).

    Bottle of SPF moisturizer

    Promising review: "This is the first product I have ever reviewed but I felt compelled due to the quality of this product. I have searched high and low for a moisturizer with quality ingredients that has a great feel on the skin, is non greasy, had a high SPF, and did not cause a reaction in my skin; and this product has it all. I get so many compliments on my glowing skin when I wear this moisturizer. I have very sensitive skin and this product feels amazing on my skin and absorbs beautifully. I love it!" —Mary

    Get it from Amazon for $33.

    15. A door draft stopper and noise-blocker that also keeps out bad odors and pests. Simply slide the two sided stopper underneath your door to keep the cold or warmth in while enjoying complete silence. Plus, unwanted guests will no longer be able to slip underneath the door.

    Promising review: "I had a large gap under my door which let a lot of light and draft inside my apartment. This door stopper fit my door perfectly (didn’t have to cut it for size), keeps my apartment now dark, prevents a draft and also helps eliminate some noise — I wasn't expecting it to completely block noise and it was not my purpose in buying it but it def helps eliminate some noise that I would have otherwise heard." —Melissa

    Get it from Amazon for $19.95 (available in nine colors).

    16. A wall mounted shelf draw organizer and toothpaste dispenser to keep all your bathroom essentials off the counter and in one place. The dispenser ensures that you get every last drop of toothpaste without you ever having to touch the tube., Amazon

    Promising review: "This is the best thing I think I’ve ever purchased on Amazon. It perfectly stores my toothpaste and tooth brushes and keeps our floss picks in the little drawer. I also keep my moisturizer and skin care on the shelf. I used command strips because we’re renting and I didn’t want to take any chances. The toothpaste holder has a lever that you push back with your toothbrush and it dispenses the perfect amount of toothpaste. It really has everything." —abigail mian

    Get it from Amazon for $19.97 (available in three colors).

    17. An OPI nail strengthener and polish that will give a brilliant shine and intense color, plus the blend of hydrolyzed wheat protein and calcium works to lengthen and repair your nails at the same darn time.

    Reviewer before and after shot of nails using product

    Promising review: "I bought this just over a month ago and have consistently kept it in my nails. I have used so many different brands trying to achieve what this one has. I have not noticed it helping them grow faster but it has definitely added strength and health. My nails would crack, and peel easily and break before reaching any significant length. Now they are very strong and the polish lasts a long time and holds its shine as well. I have applied a layer every other day as directed most of the time. I will not EVER use another clear polish brand again." —AIK

    Get it from Amazon for $17.95 (available in 10 shades).

    18. A teeth-whitening toothpaste to remove plaque, freshen breath, and give you professional looking pearly whites sans the irritation of traditional whitening strips. Perfect for coffee-stained teeth and those who want a charcoal-free whitening paste.

    Reviewer before and after photo of teeth using toothpaste

    Promising review: "Love this toothpaste, have been using it for years. Very little goes a long way. Usually one gives me about three months of use. I love the clean feeling it gives me. Just like when you get a professional cleaning done. Your teeth are smooth after brushing. I always get asked what do I use to get my teeth this white." —LIBUSE

    Get a three month supply from Amazon for $21.

    19. A bamboo charcuterie cutting board that will make you feel like the Barefoot Contessa whether your prepping or presenting your meal with it. It's anti microbial, has grooves to catch any juice, and can take a lot of wear and tear.,

    Promising review: "I've been using plastic cutting boards and used my new bamboo one today and absolutely loved it. In chopping my veggies it was so much easier and efficient. I had no idea what a difference the wood would make, plus it looks beautiful. I do a charcuterie board for Christmas each year and will definitely use this board as part of the set up." —Cheryl Palmer

    Get it from Amazon from $19.97 (available in sizes S—XXXL and in classic or rounded styles).

    20. And a portable blender that turns into a 14-oz travel cup! You can pack your smoothie ingredients and blend on the go — once it's done, just sip right from the cup or with a metal straw (save the 🐢s!).,

    Promising review: "I make a smoothie every day, and this little blender is perfect. It blends up frozen fruit just fine (as long as there's plenty of liquid in it too). You can drink right out of the blender cup, so no extra dishes to wash. It's easy to clean too; I usually hand-wash it although it can be put in the dishwasher. I've used other brands of small blenders and this one is my favorite so far. I spend time in two cities that are very far from each other, so I keep a blender at each location. The price is low enough that I could easily afford two of these. The first one I bought is a couple years old already and still going strong." —Szxvp

    Get it from Amazon for $16.79 (available in five colors).

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    The reviews in this post have been edited for length and clarity.

    Looking for more great Amazon finds? Check out some of our favorite cheap things to buy on Amazon, some of the weirdest things on Amazon you might actually want, or read through all the rest of our incredible Amazon product recommendations.