I have two very simple ones. the bigger one is simply flannel that I stapled to the wall (stitched two lengths together to get it wide enough and made it about knee high to top of my reach)...inexpensive and does the trick. The other is portable - I purchased a piece of flannel backed vinyl from WalMart, stapled the hook side of two squares of vlecro to the front edges of my book/fabric shelf and stitched the matching squares of the loop side of the velcro to one edge of the vinyl. (just be sure to stitch it on the vinyl side - almost made that mistake!) This one I can hang and leave as long as I want, but if I need to get to the shelves, or want to work somewhere else, I just roll it up from the bottom and unroll it where I want to work.