Seriously, it's the perfect thing to do when you have a group of girls hanging around. Give it as a gift (birthdays, Christmas, just because, etc). At $10 a pop, you can't go wrong! Heck, at that price, keep it for yourself! Just think, five pendants for $10 (that's $2 a piece, for those who are slow at math)!!
She also sells keychain rings it you'd prefer it that way.
Fun, fun, fun!!!