As I wanted to hang a few plants I decided to print a few basic hangers.

Check that you pot is slightly angled, measure the top diameter of your pot and chose the next smallest ring (plate name gives you the inner diameter of the ring).

I printed them with 3 outer walls for added stability and 15% gyroid infill which serves me well. YMMV!

I then took 3 equal strands of 1 mm nylon thread (you can use fishing line or anything else), looped them through 2 of the holes and tied them off. Then a final knot at the top and you can hang your flowers as you please. With the added holes you can stack the hangers with additional loops.