Long hook, no support

Nothing special, but the other hooks I found were not as strong as I would like and also required a lot of support due to poor design. This fixes those issue IMO. I printed these in Sunlu PETG on a Glacier cold plate, but it likely doesn't matter. Single screw, counterbored in a loose M4 so anything up to 5mm should be fine as far as mounting.

Due to the way it's oriented on the plate, the stress isn't in the bad direction (through layer lines). The single screw hole leverages the moment to put most of the weight on the flat surface below. It holds a kids backpack full of textbooks no problem