I sometimes use a good grade of felt (sold at Hobby Lobby) if the wall hanging is not going to be washed a lot. Very cheap and works well. I also sometimes use felt instead of batting in my Christmas stockings since these are not washed much....the felt is polyester and can be washed if necessary but I would be careful in laundering it...sometimes also use pieced batting...good way to use up all those long strips of fabric that you cut off.