Brilliant idea! I love it. And it could be used for anything! What fun! I used to love treasure hunts as a child. Actually, I still love treasure hunts. They're so much fun. I'm sometimes even jealous that little kids get to hunt Easter eggs and I don't — especially since I once saw an Easter egg hunt with a $10,000 prize. Seriously, no 10 year old knows what to do with that type of cash.