Muji doesn't inspire ecstatic fandom so much as subdued dedication. Otherwise, I'd turn into a screaming screaming junior high school girl every time I walked into one of their stores.
This Muji modular shelving system is one of five Muji products that received International Forum Design Awards in Hannover, Germany this year. Made from stiff, square-edged, recycled cardboard, and flush-fitted matte plastic joints, the system snaps together easily in a myriad of configurations. It's clean and extremely functional, but yet it's not thoroughly boring like most shelving. And it's cheap, too.
You can see all the components online at the Muji net store [in japanese]
Square paper tube rack system [ifdesign.de]