IKEA Kallax side hook

Actually its a completely new design, but it resembles the source design pretty much and I wanted to give credit.

The hook is stronger and in a 10 degree angle, that allows you to attach bigger things to the hook. And smaller things, that will automatically move towards the kallax.

EDIT 04.09.20
Added a version with a longer hook. I am using it for cables and needed a longer version that supports them.
Also added a version called "double" for if you want a hook on both sides of the corner.