Need miniature aluminum girders for your next robot? Look no further than the lightweight MicroRAX building system. Parts include 10mm aluminum beams and braces, plates, brackets, and other connectors. They’ve even developed adapter plates to attach your ’RAX to VEX and NXT constructs, allowing you to merge multiple building media. The beams are sold in 900mm lengths you can cut to size (precut lengths are also available), which is eminently sensible — forget pawing through a box of wrong-sized ones, and hack your own. You’ll be surprised at what you can build: anything from mundane shelving to robots to computer enclosures. It even comes  in ninja-black anodized aluminum!