I have a somewhat random collection of drill bits from different companies, and wanted to be able to hold them in one compact unit.

Nothing available seemed to quite match what I had, so I made one from scratch.

It holds (in mm):

Masonry bits (narrower holes): 10, 10, 8, 8, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3

Wood bits: 10, 9, 8, 7, 6, 5, 4, 3

HSS Bits: 8, 6, 5, 4, 3, 2

Random extra ( in top right corner ) : 5 

I printed it without supports, but added an extra wall (3 in total) and some extra top layers. I also set infill at 15% for the holder part, but 20% for the connectors. 

I have also included the fusion file itself, so you can edit the sketch to match your own drill bits.