I used to work in a bookstore. And someone dropped a $100 bill. A teenage boy brought it to us at the counter, and we put it in an envelope. In an hour a girl came back and asked if we had found any money, that she had lost a $100 bill.
We gave it to her and she wanted the young man's name to give him a reward--so we hooked them up. He was one of my daughter's classmates and a really nice guy.