Recently I spent a week searching the net for lap steel guitars and came upon an acoustic guitar with an attached sliding mechanism for bar chords. All you need is a moderately good ear and two hands (maybe one) to strum and slide. A wonderful outlet for folks of limited experience or ability. I will look through my files to locate information to send to you later. I have seen a film of a fellow with no arms playing beautiful barefoot acoustic steel, and one of the early Hawaiian greats(Bob Kaai ?) played steel for some years after becoming blind - more difficult than standard guitar at his level. I often think on this as I have worked many dangerous jobs and love to play. Glad to hear you are still at it. Your proposed work is very important, well done.