Because I didn't find anything directly usable and it looked simple enough, I designed (yet another) simple book to hold a dustpan+brush setup in my utility room cupboard.

The parametric aspect of the model includes settings such as:

• width, height and thickness of the supporting pad;
• length and angle of the hook;
• thickness of the hook (width/height and corner radius) as well as taper angle (hook gets thinner towards the tip);

Can be printed without supports if printed from the supporting pad. But for strength applications, it's probably best to print it on the side with supports.

I have left 2 samples that I printed for myself in step files but the advantage of this model is the parametric aspect. So adjust to your needs and share your make.