Helpful headboard wall mount... I guess if you can't attach to bed frame
Brilliantly beautiful headboard
four 1X6 boards, a sanding block, and a can of stain. Hang with "large" 3M strips (up to 16lbs and these are just over 5lbs each).
She Said...: Repurposed inspiration - Headboards - a bunch of them!
Taylor Made: old door headboard tutorial