I am just speaking about private campgrounds, public campgrounds would complicate the issue. Sorry that I can't come up with the perfect analogy to explain right from wrong to you. If you find something that is abandoned on private property do you think it is okay to take it? My point is that you have no right to touch anything at another campsite. It is really up to the campground owner to decide if it bothers him. I do not think that taking some left over wood is a mortal sin. When I leave a campground and I have left over wood, not very often, I will ask the people next to me if they want some free wood. What if a local decided that he would drive around all the campgrounds and collect the left over wood from sites and then sell it at his stand down the street. I bet that wouldn't go on for long. Back in college my roommate would go around all the classrooms in the beginning of the year and find old text books that were left behind in the lost and found. The lost and found was a box in a closet that every classroom had. He would then sell them to the book store. He made a lot of money but the book store was concerned that he was stealing books. He almost was kicked out of school but his parents were able to get the school to give him a break. Was it stealing? I am not sure.