Removable Wall Hook

Here is a wall hook with a replaceable clip.  The base can be attached via double sided tape or 3M strip and the clip slides down using a groove.  This can be printed on its back, but for strength I recommend printing it on the chamfered edge.  You will need supports for this print angle.

My settings were as follows

Layer height 0.2

Walls 4

Infill: Cubic 10%

Support: Yes, normal grid, build plate only