openWB-stamped Raspberry Pi 3 Wall Mount Case
By Burning Becks
Free
It's free to download
Technical
openWB Standalone (https://openwb.de/shop/?product=openwb-standalone) or it's components.
For the way I mounted it, I recommend two "Double USB dust plug by Ariehh" (https://www.thingiverse.com/thing:3553852).
Free