I never quite seem to have the right hex bits on my impact driver when I need them. I saw something like this on Amazon and said "why buy it when I can make it!"

It is a set of three tapered tubes that glue to the side of your impact or drill driver. Simply attach with super glue. Can hold up to 6 bits.

V1 & V2 have different hole sizes. V2 worked best for me but your millage may vary based on your printer and flexible filament choice.

Print instructions

Print in Flexible (I used old Amazon basics)

I used the Generic Flexible settings in Prusa Slicer.

You may need to play with the scaling to get it just right for you.