I also purchased a sheet of builders insulation which is 3/4" thick and very light weight. They had a piece that was damaged on one end so got it for half price three years ago. Covered it with a flannel backed vinyl tablecloth - just wrapped it around the corners and stapled. I just lean mine up against the wall when using as I sew in a guest room. When guests come, I just stand it up in the closet out of sight. I did mark mine into 2" grids on the flannel for watercolor squares and it works great.