The picture shows a 2mm wooden board, 4.63mm deep and 9.86mm wide. Below the board there is 3mm clearance for wires. Above the board, there is 5mm of free "air space". Behind the wooden board is a 2×7mm aluminum plate. The board is suspended on the left and right (cut off for visualization) by 3mm aluminum plates.
I would like to mount an LED somewhere on the board or the aluminum plate behind. I could also mill into the suspending aluminum on the left side, if that helps with mounting.
What is a good mounting option?
Already, I looked at the Mouser EU catalog, but close to 40,000 LED products is overwhelming, and unfortunately for many products pictures are bad or missing. I was thinking about a classic dome shaped through-hole LED, but I don't think I can securely fasten this. It should be safe to touch.
Nice to have, but not mandatory:
Multi-color LED, e.g. an RGB one.
Brightness should be that of a typical keyboard status LED, i.e. not super bright.