I covered two 8' x 4' insulation boards with felt using a staple gun. I then stapled the covered board to the wall. It is easy to remove and the tiny holes left in the wall are easy to cover with a dab of paint if they do show up. Not having a design wall would be very frustrating for me. Everyone has one wall somewhere in the house that a foam board can be propped up and stored under the bed when not in use.