I modified a pillar cover found on Printables (https://www.printables.com/model/708548-flsun-sr-super-racer-pillar-cover) to host a led cob module 30x45 (Aliexpress 48SMD Cob White Led Panel T10 DC 12v ).
There is also a version with switch, you can use a micro switch 8x13.5.
Finally I use a dc/dc converter to connect the lights to the PSU of the printer

Printsettings:
Support only on the builplate
PLA+ or PETG
0,20mm layer height