I don't have a large design wall, but I made a little cornice about 60" wide. On the sides, below the top shelf area, I put a long roller shade with a plastic flannel back table cloth stapled to it. When I want to use it, I just pull it down.When I want it out of the way, I can roll it up with the blocks still on it.
[ATTACH=CONFIG]383277[/ATTACH][ATTACH=CONFIG]383276[/ATTACH] I hope these pictures come through since it is hard to describe, but it was easy to build.