I took the stackable boxes shelf and removed the hooks. Instead I made holes in it to use it with the skadis universal hooks:
https://www.printables.com/de/model/183085-skadis-universal-hook-base-and-modified-hooks
or
https://www.printables.com/de/model/528977-skadis-universal-hook-without-stick-out
The author remixed this model.