A simple, customizable tray with standoffs for an Arduino Uno or Mega/Due If you like this thing check out laird and boelle's things: http://www.thingiverse.com/thing:202525 http://www.thingiverse.com/thing:164778Set the standoffs according to the length and size (4-40 or M3) of screw you will use. Set the standoff hole diameter to the appropriate tap hole size (you will need to tap the holes yourself). The gaps for the USB and power plugs will automatically be placed level with the top of the standoffs. The clearance setting determines the gap between the arduino and the side walls and plug gaps.