A simple, pegboard compatible, rack for a 9-piece hollow punch set, specifically this one from Harbor Freight, item #3838.
I had originally planned to place the punches in the rack with the sharp edge pointing up. After it was printed though, I noticed that a few of the bottom ends had mushroomed ever so slightly from use, but enough to make fitment tight. I thought about filing the edges down, but they'd just mushroom again when I use them. I thought about making the holes larger, but then the punches would rattle around in the rack. Then it dawned on me.. hey moron, turn the punches upside down. Not only do they fit perfectly, the sharp tips are protected and the sizes are visible. That's ok... we all have blonde moments :)
The mounting holes are aligned with standard pegboard spacing (1" on center) so you can use peg hooks, as I did. The holes are also slotted for easy screw mounting.
Print in the orientation provided with no supports with a mid-range infill - I went with 40%.