Don't have a picture, but I do the same thing as Zen Amps. A nice oak board screwed into the studs with angled hangers screwed into that. You could also use those U shaped tool hooks from the hardware store if you want the guitars to face forward instead of angled. They're just the right size for hanging a guitar.
I also converted a closet to a guitar rack. They're not seen but easily accessible to get played often enough.