This is a cute little light- but be warned. It is REALLY LITTLE. You would be able to use this as a keychain with no problem. It's a really cute design, and the lights come on in a few different colors. However, you can't really enjoy the lights for very long. There is an automatic turn-off feature after about a minute or so, so you can't really use this as a night light. It's more of a cute novelty item for a Hello Kitty collector.