Use 2020 aluminum extrusion to create a mounting system with an over the door hanger. Optionally secure hangers with M4 x 8mm screws and T-Nuts.
2020 Aluminum Exrtrusion
https://www.adafruit.com/product/1221
Slim M4 T-Nuts
https://www.adafruit.com/product/1157
M4 x 8mm screws
https://www.adafruit.com/product/1160
The author marked this model as their own original creation.