This film just so darn much FUN! And it's not just me who loves them. Yes, my fellow grown-ups chortle with glee when they see the creative uses I've had for these pictures. These have included (but are not limited to):
* taking pictures of kids when they come to my door at Hallowe'en (with their parents' permission) and giving them a picture of themselves in costume instead of candy (a healthy hit with both parents and children)
* decorating my Christmas card envelopes with tiny photos of my cat
* taking a slew of these pictures at a friend's housewarming party and putting them in a tiny album
* positive reinforcement tool for my neice: every week she doesn't chew her nails, we take a picture of her, or of the friend/stuffed animal of her choice

This film works more or less like regular polaroids, but are just so cute and versatile because of their size. They come either with an adhesive backing, so you can stick them on without using glue, or without. There are a wide variety of tiny, magnet-backed frames for sale here at Amazon.com, so if you want you can proudly mount the snapshots on your fridge for the world to see.