A hook for hanging the Skadis board on the bed. You can hang the Skadis perforated board available in Ikea stores on this hook without having to drill holes. I have this board hanging on my children's bunk bed. Both the board and the hooks do a good job. Print from material the same color as the board to reduce the visibility of the hooks themselves... unless you have another idea.

The width of the board on which I hang the board is two centimeters. 

I printed it with 40% infill & 4 layered walls.