I plan to make a screw with the spare washer, soldering a headless screw, I'd also like to flip them over. Recessed screws isn't that easy to work with, this is just with your fingers.
The step would be nice for pcbs, but I plan to add a thick piece of rubber so I can hold round connectors and such without the need of compensating on the other side and to be kinder to the piece.
If I had a turn my self I'd try different features, captive washers so you don't need to hold them up to insert the piece and doesn't tilt that much. Maybe a Key pin next to the screw so the washer doesn't spin. I'd also like to try a sqare one, I couldn't find sqare stock locally.
Turner time is quite rare here, the guy works for our factory, I wanted a simple piece that he could turn without much trouble as he would take the job even if it didn't worth for him.
JS