I'm in the process of designing a quadcopter using a MoteinoMEGA, and decided to make a 3d printable attachment to keep all the wires clean.
Feel free to use it if this helps you. I also have the openjscad.org (CAD modeling for programmers) source files , just ask if you want them.
pictures:
http://imgur.com/a/MFdXrPrintable STL is attached
