Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5071801.

For the Max Verstappen fans,

You can use white pla or transparent for the diffuser panels. For the assembly, you can use some glue to stick the diffuser panels more firm on the casing.

I used some Neopixel ws2128b led strips chopped in pieces (9 individual LEDs) and placed them inside the casing. Then I soldered some wires through them and you have an exit point on the side of the panel where you can connect it with a microcontroller.