This is a gridfinity holder for my Starrett center punch. It's a 1x2 grid and is fairly small and easy to print.
Below is the Amazon link to the Starrett center punch that fits in this holder.
https://www.amazon.com/Starrett-117C-Center-Tapered-Diameter/dp/B0006J4QOG
Punch_Insert.STL | 414.5KB |