My Latest design wall is a set of wrought iron shelf brackets with the shelf on top naturally no space wasted. Then a long rod I used a closet dowel, then a taupe colored flannel. (I prefer this color since it does not distract the eye like white or black) Not only can I clean it by rolling lint roller it can also be removed and washed over the years. Since the wrought iron has multiple curls I can hang more than one design wall handy for all the multiple levels I work on. Also to keep it stable I have a pocket in the bottom of the flannel for another rod that gives tension and stability like a curtain shade. (I wish I had the foam core insulation board behind it because then I could pin heavier pieces right to the wall.) That would provide the ultimate design wall! Have fun with yours.