We just did an 8 ft high by 10 foot wide design wall in my sewing room. Husband found 1/2 inch sound insulation board which we trimmed to fit and then I covered with Warm and Natural batting. It is good to use either a basting spray or light adhesive but not 100% necessary. I pulled around the back and stapled down. Then we screwed into furring strips on the wall. These were only necessary since we wanted to go over the molding that was along the floor.
The Warm and Natural is sturdy enough to pull smooth without making holes and it looks great and things stick. I can layout a whole quilt on the wall by just smoothing the pieces in place. Heavier blocks and chuncks are easily pinned in place. The batting which was on sale was the best choice for me.