I've desingd a door knob in which you can put a LED, if you put brass inserts in the holes, the legs of the Led should make a good enough connection with those and therefore the screws that you can power the Led through the screw and therefor the door.
That way you can for example have it turn on while the 3D printer behind the enclosure door is running.
I would advise on sanding the LED with some rough sandpaper to make the light shine more diffused.
You may need to modify it a bit to make the Kind of LED that you have fit.
The author hasn't provided the model origin yet.