Of course you could use an over-the-door shoe organizer for storing shoes, but beyond that, there are lots of uses for these hard workers. Apartment Therapy has a round-up of some of the best.
A shoe organizer hung in your laundry room is an easy way to keep all the cleaning supplies and laundry things separated and easy to find. One hung on the back of the pantry door is a convenient place to store small objects that might otherwise get lost.
In the coat closet, a shoe organizer is a great choice for storing hats and gloves. In the bathroom, it can corral hair accessories, make-up, and other beauty products.
In the linen closet, you can keep your first aid kit in it, and in a kid's room, shoe organizers keep art supplies neat and easy to find. Also in a kid's room, it can store Barbies, cars, or other toys.
A shoe organizer is great for keeping the little scraps of paper from scrapbooking neat, as well as giftwrapping supplies.
Finally, take a shoe organizer on the road as a way to keep supplies organized when camping!