Modular case now on Thingverse!
See it here: http://www.thingiverse.com/thing:140689
Download now if you own a 3D printer and/or don't feel like waiting on our injection molds... :-P Later on, we'll get models posted for double-row matrices & beyond.
This case takes about 9 grams of ABS plastic to produce. More details (like 3D printer settings) will be posted on the Thingiverse page.