Here's an update of my 3D prints on the IKEA Skadis as promised! Added a floating shelf for my handheld history book and Miyoo Mini. Link for 3D models in comments. :
IKEA Sadis: 3D printed hooks + plugs to lock hooks in place - YouTube
Filament Spool Holder for IKEA SKADIS by alecs.form | Download free STL model | Printables.com
3D printed plug for the IKEA skådis pegboard - YouTube