I designed a block to fit this set of hex wrenches from Home Depot. https://www.homedepot.com/p/Husky-14-Piece-T-Handle-SAE-MM-Hex-Key-Set-HTHKSM14PCN/204153272
I printed with Polymaker PETG. I had to use a brim to prevent warping on the first layer. I printed with 10% infill, but its way stronger than it needs to be, I suspect you could get away with 5% and save a bit of time and filament.
The author marked this model as their own original creation.