This is a Portal 2 styled PC Power Switch

The Cube in action:
https://www.reddit.com/r/functionalprint/comments/vic764/portal_2_pc_power_button/

Download Link:
https://www.dropbox.com/sh/afmkt2d36raqihk/AADEmBhtwL4ZYQ1uJ7r9X2k2a?dl=0

2x Seeeduino SAMD21
6x 8 Neopixel Ring
9x Single Neopixel
6x Super Capacitor Coin Type, 1,5 F, 5,5 V
1 or 2 Relais for Arduino
1x bridge ractifier MB6S
2x A3144 Hall Effect Sensor
wires and connectors
4x metal disks for contact points (found some 11mm in diameter)
1x tactile push button (reset button for the cube)
3mm metal wire
1x 5V Power Supply
4x M2.5 Srews 10mm (for the cube) (power delivery)
4x M2.5 Srews 6mm (or glue) (for the button)
6x M16 Nut
2x Magnets 10mm x 3mm
4x ring terminal M2.5 or M3 (for the cube) (power delivery)

I made a box for some electronics like the 5V power supply and my power strip relais. The walls of the box are solid. So yout have to drill some holes depending on the diameter of your cable. The box can be hidden behind your desk.

The SAMD21 works on 3.3V logic so the hall effect sensor must be powered to the 3.3V pin on the board.
The neopixels work on 5V logic but in my setup I have no issues controlling them with 3.3V logic.

P.S. I thing aceton is the best glue for PLA