I am much more comfortable on this misbegotten planet knowing Hossam Abdalla is also here.
My youngest daughter found a $5 bill on the school bus once. She was about 8 at the time. She took it to the school office, explained that she'd found it and wanted to make sure the kid that lost it could get it back. Some...time...later, when they finished gaping at her, they took the bill and stuck it in an envelope. The hysterical little boy who had lost that week's lunch money turned up to claim it. My daughter was very, very happy.
Sometimes it's fun to do things like this just to see people's reaction.