I recently made a design board from foam insulating board bought at Home Depot, 4' x 8'. I had them score it length wise, but not all the way through. I did need to cut down a little because my ceilings are not 8' high. At home I covered it with flannel using making tape on the back to secure. When folded, it fits behind my door out of the way. Couldn't flip the picture, but you get the idea.