Roy, at the Bandits Roost COE campground in Wilkesboro, NC, they had a big pile of wood. They had a little thing you filled up and it was a certain price for that amount. Forgot the amount, but it was a good deal. Went over to the check in booth to pay and they said to put the money in this box. It was for some organization, I want to say a church or something, but it was totally on the honor system. They never looked to see how much much wood you got or how much money you put in the box.
Thought that was pretty neat. I threw in a few extra bucks.