Here's a simple power supply cover for the TwoUp (with heated bed) power supply. It's designed for easy printing, requires few components (3 large screws, 1 small screw, 1 tie wrap, 1 switch, a little solder, and optionally some liquid electrical tape), and adds a convenient switch for the power supply. UPDATE: I've updated the spacing a bit and added a few more sides (and more screws). It's much more stable now.