How about using a hallway wall? I put my design board up in the entry to the hallway in the back of my house. The board has grommets in the top (mine came with the grommets in it, but you can put them in yourself) and I used those hooks that you can remove from the wall when you need to and they don't leave a mark or a nail hole. I can either leave it up, or easily take it down if I need to. It stays up pretty much all the time, if I have stuff on it, it's a great conversation piece.