I have an Indian Harmonium, and I have a couple of various 'portable reed organs' - basically half an accordion with a few stradella basses.

One I have been meaning to start a thread to get fixed...

Actually years ago I came across a thing that had some guitar strings - not many, and was called a 'clavichord' - this was an electric one with pickups in a black vinyl case - was used in a band - sig out to go to processing box - dearly want to find one of those - they work by touching the strings at varying points to get many notes out of one string...