This accessory allows you to quickly connect and disconnect the 12V power supply to the lamp from this project:

https://www.printables.com/model/77818-prusa-mini-nozzle-illuminator-led-light-led-lamp

For assembly, I used an M3 T-head bolt. A DC 5.5/2.1mm 2A power socket and a switch with a thread diameter of approximately 6mm.