Mona202- If you don't want to mount the foam boards permanently on your wall why don't you get the heavy duty velcro made by 3M and use that ? It comes in black and white and if you get the color closest to your wall and put them way up high by the ceiling you can leave that half up and the other half (the sticky one) stays on the board. No one would notice the part left on the wall. Take the board down and store it when finished using it. It will be ready to stick up when you are ready again.