So when I went in a company with various machines, I was asked to find a simple solutions to avoid losing the laser cutter pige

what's a pige ? it's a little metal part provided with some laser cutters to help you set the height beetwen the wood you want to cut and the laser, in order to get the best focus in a precise way without using a ruler everytime

This little box needs 4 6x1.5 mm magnets, but you can also simply use double sided tape