Earlier this summer I was mountain biking with my dog at a reservoir we frequent. I got back to my car and found a $10 bill in the grass nearby.
The next day I was riding the same area, rolling through a field frequented by horse people, when I thought I saw a folded-up twenty. I went back, and it was a twenty, with another twenty and a ten inside.
Oh yeah, I stopped both times.
I didn't report it to anybody because I ride for fun: I don't want to have to turn pro.