My turned screwdrivers are now for sale.  They feature a solid dogwood handle and a polished magnetic bit holder which accepts all 1/4" hex-shank screwdriver bits.  The price is $25.

 

To make a screwdriver, I first cut a dogwood blank to size.  Then I bore a 1/4" hole to accept the shank of the magnetic bit holder and use a forstner bit to square the face of the blank to the hole (Photo 1).  Next, I put some cyanoacrylate glue into the hole and press the bit holder in until it is seated fully (Photo 2).  The screwdriver is mounted in the lathe, with the bit holder in a chuck and a live center supporting the butt end of the handle (Photo 3).  Finally, the screwdriver is turned to shape and a finish is applied (Photo 4).