this is actually a pretty cool story. when i was playing baseball in high school my coach was hitting fly balls out to center and knocked one over the wall. when i went to retrieve it i found $20 laying inches from the ball. talk about having a good practice lol.
Found a total of something like $27 once at Six Flags...just lying on the ground. Can't remember the exact amount, but it was a 20 and a few other bills.