I wanted to use the cat key hook but needed multiple ones.
I've binded them together to have the 2 or 4 cat variant. It still uses the original cat, hook and cover.
I've also added screw holes, designed for 6,7mm screw head.
If you need to do modification I've provided fusion 360 files.
The author remixed this model.
Binding of multiple cat together (2 cats and 4 cats variant)
Added screw hole to mount on the wall.
Still use original cat, hook and cover.