For better orientation into dark bed room, i designed glow in the dark marker, that highlight the corner of the bed. It fits on a 50 mm board, as it is used in my IKEA MALM bed. (Please check before printing the size of your bed, as the design of the bed was changed in recent years)

For printing, I used amolen glow in the dark green PLA. The printing was done with only one wall layer and 10% gyroid infill to get the effect as shown on the photos.