While there are many drill / tap guides out there, I wanted one that wasn't too large, and covered the sizes I was most likely to use.  This is that guide.

I printed this in PETG with 3 perimeters and 0.3 layer height and 20 Gyroid infill, but with 0.15 layer height for first and last 1.5mm to make the fillet look better.  Also, on the 9mm version, I printed with exterior fuzzy skin to help with the grip.