One technique I came up with years ago for an exotic tone from electric guitar is to tune the A and D strings in unison, and the B and e strings in unison, giving about two octaves below the 12th fret for playing “courses” of strings. Tune the E and G strings to a suitable pitch for your chosen open tuning.
Then, place a microphone right up to the guitar and record it acoustically… add some reverb and it provides a wonderful (albeit tinny) sound to change the tone of a song.