10 Companies You Didn't Think Were Worth Millions

You may not have heard of these companies until now, but these hidden gems are raking in big dough for their savvy investors. Think you can spot Wall Street's next big thing before anyone else? Then give Fantasy Earnings Trader from MarketWatch a spin. It works like Fantasy Football, but your roster is an investment portfolio you pick using MarketWatch news, data & tools. Check out the hidden gems below and quarterback your own investment strategy with Fantasy Earnings Trader.

1. Quidsi

Quidsi started in a Long Island, New York garage and was first called 1800diapers.com. Now, it's a top online retailer and owns sites such as Soap.com, Yoyo.com and Wag.com. The entire company was purchased for $540 million by Amazon. Think you can spot which online retailer will deliver big next?

2. Lucky Break Wishbone

Do you remember after Thanksgiving dinner when your family squabbled over who would get to break the wishbone. Frustrated by never getting to make a wish, Ken Ahroni took matters into his own hands. Ken found several plastic companies that were able to manufacture breakable plastic and turned a wish into a million dollar business. Ken's Lucky Break Wishbone Corp. now earns about $2.5 million per year.

3. Chegg

The history and economics behind this company, which lets students rent textbooks, is worth learning about. Chegg.com has not only taught the world what a great idea is worth, it's also planted close to 1.5 million trees around the world - one for every textbook bought, rented or sold.

4. Airbnb

Looking for your next vacation spot? Look no further than Airbnb.com. Airbnb was founded in August 2008 by Brian Chesky and Joe Gebbia. It's an online service that matches people seeking vacation rentals with those with rooms to rent. In July 2011, the company had over 100,000 listings in 16,000 cities and 186 countries and was valued at a billion dollars. If you're good enough to spot a site like this, you'll enjoy traveling to these places in your private jet.

5. Allstar Products Group

Who thought adding sleeves to a blanket could make you millions? The parent company of Snuggies, Allstar Products Group, apparently did. With sales topping $60 million in the past year, it's easy to get comfortable with an idea like this. Think you've got another million dollar idea up your sleeve?

6. Green Mountain

Every morning, people in offices around the world chug coffee. Green Mountain Coffee took advantage of that addiction and started making individual ground coffee cups for brewing systems in those companies' kitchens. And as of July Green Mountain was valued at a whopping $29.6 billion.

7. Fatheadz

Tired of not being able to fit into his sunglasses, Rico Elmore came up with a million dollar idea. And he didn’t even know it. Elmore’s company, Fatheadz, is essentially sunglasses for large people. And in 2010, the company was valued at $2 million. Can you spot another great idea ready to earn a fat check?

8. Craigslist

Kinda crazy that a website that is as simplistic as Craigslist can generate such a huge profit. The site that famously killed the newspaper by charging for only a small percentage of its ads is currently valued at $5 billion. If Craigslist began to charge more of its classified ads, it could generate at least $1 billion in revenue. Think you can do the same?

9. Sky Zone

Sky Zone's indoor trampoline parks are attracting birthday parties, corporate events, three-dimensional dodge ball tournaments and rabid trampoliners willing to pay up to $12 an hour, which adds up to over $3 Million in revenue for this fun as can be company. Think you can do better? Bounce your ideas off the experts.

10. 1-800-Got-Junk

"We'll stash your trash in a flash." The tagline for this junk removal service says it all. The company, founded in 1989, is now worth over a $100 million. Instead of trash talking this investment, play to win your own millions.