Ever find that your screwdrivers are either too big or too small?
Do you have a collection of 1/4" hex bits not being used?
This handle is designed to accept short and long hex bits.

The bits are held tight in the handle so they can be collected on an as-needed basis.
Or print them slightly over-sized to allow easy bit changes.
As a bonus, I've included a "persuader" for those places where you need the torque but lack the space to get a good grip on the handle.