I was looking for a light to illuminate the print bed on my UltiMaker when I found the Ikea Jansjo light. It's only €10 and when I got it home I saw that it could be mounted in the UltiMaker itself with a simple block. It uses the screw holes most often used for a carrying handle (sorry, it's this or your handle!) Just screw the lamp to the block with the screws supplied with the lamp, then screw the bloack to the UltiMaker. I used large, M4 washers between the nuts and frame to spread the load a bit.I also made a couple of simple clips to hold the switch that is in the cable on the side of the UltiMaker.