So that I'm actually contributing to the thread and not just snarking, here's an MJP rig I put together but haven't started actually using yet. It's built into a turntable roadcase, small and light enough to check on an airplane without extra fees. All power supplies and most cabling are hidden beneath a thin wooden platform that all the gear sits on.
This photo features gameboys that have since been modded beyond recognition, handmade GenMDM, and the wrong arduinoboy.