I've created a holder with a transparent cap for a single hole, designed to accommodate an addressable RGB diode - WS2812B.
The holder has a hole through which you can route cables.
To power and control the LEDs, you'll need to connect them to a control unit, such as an Arduino, and provide a 5V power supply.
You can find detailed information on how to connect and control WS2812B LEDs on the Internet, for example:
For front, side and top of Qube500 case you will need a total of 543 holders and diodes :)
The author marked this model as their own original creation.