Raspberry Pi multi quad case

This is a case for four Raspbery Pi and/or Tinkerboard. Inside is room for an psu. On the side are holes for a main switch and four separate switches to turn things on or off.
The switches i bought from www.conrad.de for example this one here: https://www.conrad.de/de/kaltgeraete-steckverbinder-c8-stecker-einbau-horizontal-gesamtpolzahl-2-25-a-schwarz-c8-1-st-1572265.html