Martha Stewart Living, November 2005
Bring the ends of a 1-inch-wide grosgrain ribbon together (ours was 36 inches long); fold ends over twice. Attach folded ends to wall with a screw gun.
Slip a 1-by-6-inch painted plywood shelf into ribbon loop, so ribbon is at least 3 inches in from shelf end. Have someone hold that end, then slide other end into a second ribbon loop; use a level to ensure shelf is straight, then affix second ribbon to wall. Adjust shelf inside ribbons.
Secure ribbons under shelf with a staple gun. Use shelves for lightweight objects.