A simplistic shelf for our IKEA malm i came up with to put my e-reader, glasses and phone onto at night.

The upper and lower board can be any 3mm material you like measuring 210mm x 107mm for the upper board and 210mm x 140mm for the lower one.

For assembly simply glue the upper board(grey), upperborder(red) and crosspiece(blue) together. Then slip over the bed's sideframe and insert the lower board.

The drawer beneath should still be functional.