This is a rack for the 13 piece metric Tekton hex wrenches (1.27 - 10mm).
I started with no bottom surface, but decided I wanted to be able to weight it down by filling with, e.g. sand, so I added a bottom and a hole in the back. I intend to print a plug in TPU to seal the hole.
No supports needed, though I used them for the hole.
The handles are from: https://www.thingiverse.com/thing:951909, which scaled as needed, the largest being ~230% (using the 4mm stem)
I printed the first 20mm at 0.3mm layer height, then the rest at 0.25mm. I used 0.7 mm layer width, 3 perimeters, 3 bottom, and 4 top layers. As noted above, I used manual supports for the hole in the back.