A hook that snaps on songmics wire grids. Perfect for hanging stuff up. I printed them in PETG due to the flexibility needed to clip them on and off. If they are a little bit loose you can bend the wire a little bit to get a better hold as the wiring is not always right. They should not slide around though if you do that.

Edit 1: 
Changed the thickness of the clip on mechanism to make it less breaking prone.

Edit 2:
Added a magnet clip (8x2mm).
Added a bowl holder.

Printing settings:

Brim settings: 3mm with 0,15mm offset

Infill settings: 15% Cubic 

Wall settings: 4 loops