Finally got the clamp rack finished. Initial idea from a post on Lumberjocks, who got the idea from a guy's website: (http://woodworking.phruksawan.com/clampCabinet/),
then after I finished it, I noticed it on the cover of FWW's 201 Tips for Woodworkers. So, clearly a few people have liked the design.
It allows for storage of at least 30 clamps, in very minimal space.
Anything I can do to save space in this 2 car garage that needs its car back, the better.