I bought a king size flannel sheet to use on my design "wall". The sheet is a cuddle duds brand from kohls and is thicker than the less expensive flannel sheets out there. It has been a while but I think king size flat sheet sheets are 120". So that may be an option for you.. When things stop sticking to it, I just give it a light spray with quilting basting spray. Makes it sticky and it lasts for quite a long time.