I'm loving the Riveli modular shelving system, which adds functionality to wall-hanging art. It's a simple grid of flip-down panels with an option to slide your own images into each frame, or any material up to about 3/16" thick.
These are not cabinets, nor are the flip-down shelves intended to provide storage when closed; the system lies nearly flush with the wall. Instead the Riveli is meant to provide a quick way to capriciously rearrange whatever it's holding. I could also see placing delicates on a higher shelf when children come over. (Of course, you'd have to conceal from them the fact that the panels can be opened, or the little buggers would probably climb their way up to the top.)