I use my laptop in bed, a lot.  I needed a way to mount a Belkin BoostCharge Pro Charging Station to the back of my night stand to give me a power source close to bed to charge my laptop and other devices. 

So I created this model because I couldn't find anything that met my requirements. The diamond openings in the front and back allows for, admittedly minor, heat dissipation. I haven't characterized how much heat this thing puts out when it's charging at the full 108W. The 45-degree angles of the diamond openings allow you to print it without needing to use supports.

Because of the heat potential, I also printed this in ABS. The screw holes (4mm) are designed for #6 screws. 

The Fusion 360 file is attached so you can make any edits you need for your use case.