These Rodan wood boxes can be used individually or stacked and arrange to create a personalized unit.
I may have rec'ed this before; I can't keep track. Anyway, it's a testament to how much I adore this wall unit.
Hey, the Expedit series of gridded storage just got smaller. Its also available in brown/black.
Here's a smaller version of the original Tetrad Bookcase. I'd want to do a modification on it by painting a few of the inside planes.