Small dustpan with teeth to clean brush. Handle prints separately. Friction should be enough to keep the handle in place, but I recommend glue. Print whatever infil % you want. I've done 40% for the dust pan and 40% to 100% for the handle. No supports are necessary, but consider a brim for adhesion for the handle if your printer adhesion struggles with a small surface area touching the build plate of a tall object.

UltiMaker

Ultimaker 3 Extended

No

No