There are those moments when I think to myself... "Why didn't I think of that!!" And man do I wish I invented these little guys. I am sure your kids are all obsessed with these things. They are rubber bracelets that maintain their shape when you take them off. My kids are obsessed with these things. They trade them at school and are constantly on the lookout for new shapes and themes. And does it matter what color they are? Not for my boys... the more color the better! It WILL make a cute scrapbook page though!!