Too many cans with no storage!

A decorative towel bar will work.

if you are in north jersey John at Audio Connection has some beautiful maple headphone stands with room for two pairs

Beer?

Sennheiser makes a nice clam that goes on the edge of a shelf.  I have approximately a dozen cans and find it works well with all the various types that I have (Grado, Auduze, Berindynamic, AKG, Koss, etc) and they work well.  I found them advertised in Crutchfield a few years back and bought a half dozen.  They are great and I have them all available at a moments reach.  I also use the Core Audio Design Zebra headphone stand, which I consider one of the best of all time.

Don’t get me wrong but I have to admit more than one or two visible sets of phones begins to look like clutter. A wall mounted cupboard sunken into a wall in between joists would be my way of storing as many sets.

A shoe rack takes up more real estate than these. And shoe for shoe may even cost more  http://www.biz2bizonline.com/hamilton/W904_W906_wireless_listening_centers.html

The dummy heads are a smart idea.
http://www.apartmenttherapy.com/5-headphone-stands-to-display-your-cans-179788