Free: Contests & Raffles.
I hate camp grounds, all of em. can't think of a one I enjoy, they are full of people and rules.
This is my all time favorite, its about 4 miles from the truck in a nice little mountain range in Montana. Sites are fairly level... nice little creek about 40 feet from the tarp.... elk usually bugling within 400 yards of camp in September... no one to be seen....As for the drive in campgrounds.... Yuck.