I made this small holder for my french cleat wall to hold a small flower pot called BOYSENBÄR from IKEA with a diameter of around 6cm.
It hooks onto the top of a 45° cleat that can be ~6cm high. There is a small ledge at the bottom too to secure it a bit.
Can be printed standing up with supports only needed for the main 45° edge. I used tree style supports in PrusaSlicer and printed it with my Prusa Mini.
The author marked this model as their own original creation.