These wall hangers put a clever spin on the term 'cup hooks'. DIYable? I'm thinking it might be worth a shot. If the cups were more cylindrical than conical, the interiors could even be used to stash stuff. To attach them to the wall, we could drill holes in the bottom of the cups, or we could epoxy them onto something which we could then in turn hang.
The originals are available through Birkiland by Ragnheldur Ingunn Agustsdottir for about 36 bucks a cup.
Visit Freshome for 24 other very creative wall hook designs.