My only cycling haul was on the LA River Ride this year, when I saved the reuseable shopping bag someone dropped.
But my best-ever haul (that I could, with a reasonably clear conscience, make use of) was one day in at a grocery store pharmacy, picking up a prescription. When I looked down while I was digging in my pocket, I saw money on the floor. Turned out to be two Franklins and a Grant.
I turned in the credit card I picked up Sunday morning when I stopped at the 7-11 for coffee.