Not only will it keep you from getting stuck in the legendary purse black hole every time you try to find your keys, but it'll make switching from one bag to another way less of a pain in the butt. You'll finally have the time to match your purse to every outfit like a legit fashion plate.
Promising review: "This bag has revolutionized my life! As a professional woman who needs to stay organized, my purse was my downfall. All my adult life I've fumbled to find things on the bottom of my handbag, no matter what size. Do I have a pen? It's got to be here somewhere. Paper, yes I think I have paper? Well, its crumpled, but it's paper. Now I'm the picture of efficiency, with my wallet, pens, paper, cords, phone, keys, gum, safety pins, comb, ID badge, mouthwash, lipstick, cold capsules, and more all tucked nicely into this travel bag, which easily slips in and out of any purse I choose to carry. This organizer holds a ton of stuff and everything is in full view. It's completely changed everything." —Janis Creason
Get it from Amazon for $7.99+ (available in three sizes and 27 colors and prints).