Tool Holder
I have two 11 inch wire racks (https://www.amazon.com/gp/product/B00G268CRO/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1) stacked on top of each other that holds my printer stuff. I wanted a place to hold the often used stuff so drew this up in TinkerCAD. The wire it hangs on is 3.7 mm, so the gap is 4 mm. Re-sizing and using the components might come in hand for other places too.

Prusa i3 MK3S

No

Yes

Is easy to print using supports for the back hook