If you're like me you think 2" hex bits are the perfect bit. Well, 1.5" would be the best, but 1" is definitely too short.  1" bits need those stupid bit holders which are always lost.

I didn't see a 2" bit holder for gridfinity. There are 3" holders, but they're too big. So I made one.

Would really fit a 2.5" bit. 

If someone likes this but wants to design a better one, I think alternating bits from each side could pack two more in for skinnier bits. I've also thought about starting with 1.5x1x2U bins for extra density.