I spent the "big bucks" for the Block Butler thinking it was the answer to all my problems. It will only stick to the wall once or twice and the block will only stick to it about the same. I followed all instructions and stored it with its protective plastic and what a waste of time and energy. I threw it out! You could purchase a piece of foam core board (size of a sheet of plywood), cover it with a flannel sheet and lean it up against a wall or just use masking tape to put the flannel sheet on your wall - it won't harm the wall and pieces stick to it beautifully.