A while back I reserved disasterbracelets.com for one of my many crazy ideas. There are medical bracelets and similar, but I wanted to make snap bracelets for kids that had their parent's phone numbers, etc.
Then if separated in a large public gathering like Disney World, people finding the child can more easily reunited them with the parents.
They would work well for disasters too.
You would go to a webpage, upload pictures for the outside of the band and info for the inside. Then friends could make friendship bracelets as gifts and families could make disaster bracelets.
The disaster bracelets would allow you to put passport type photos on them.
I just never did much with the idea.
When my son is bigger I could do something like that. Right now he won't wear bracelets. I need to put a leash on him...
Schools had to ban the snap bracelets for a while because of trouble with them, but now they are allowed again. Kids usually love them, and you'll see them given out at fairs and such. He might wear one if you had pictures of his favorite super heroes and other cool things on it.