I could never understand people who laugh at coin jars, and leave their loose change anywhere--they think the amounts are too small to bother with. In the days when I was a public employee, working for a county and driving county cars, one of the case managers always left her loose change in the car. She just didn't want it. (And was one of those always whining about not having enough money.) I used to scoop it right up, if I was the one driving that car next. When I accumulated around $20 (from various sources) in my coin banks, I would go to the big bank, get the folding money, and use it for milk and bread. Hey, $20 buys a lot of milk and bread. (When I found $4.00 in the county car, I turned it in. I figured that had to be somebody's lunch money, accidentally lost.)
Actually, I just now picked up 6 cents in the parking lot while walking my dog. Into the piggy bank! Yay!