Cloverleaf tuner turner
 

We've got a multi-bass project going on here, building some prototypes, and I needed a tuner turner I could chuck in a drill/driver; this one's just a piece of high density polyethylene (I think), slit on the tablesaw, and drilled out so that a 1/4" driver bit's a forcefit. I darkened the edges with a sharpie, so they'd show up.

OR something like this: http://www.gollihurmusic.com/product...NG_WINDER.html

Not all that available, on a Sunday night....;)

Nice work! Way to be a problem-solver.