This is a hacked together Raspberry Pi 3B mount for the Microcube. I will probably remix it to move the mounts to the other side so it can be used with a 3.5 inch display to the left of the LCD display for the RAMPS.

I am using ebay item # 381374423467 to convert 12v to 5V, will finish up installing later - plan to remove the USB connector, solder on some jumper wires and attach to RaspberryPi GPIO pins to power then stow it under the HDMI connector.