Design-Your-Own Computer Case Kits
I was walking the aisles of the local Fry’s and discovered a nifty computer-case-erector-set-thingy. Made by Aero Cool, the Lubic kit is basically a bunch of aluminum rails, acrylic panels (for mounting hardware to), and misc. screws to connect it all, for constructing a unique computer case. They have a gallery of example cases. BTW, Aero Cool also makes neat CPU coolers.
