Uses an Arduino CNC shield. Left motor applies tension to the string, right motor puts it into vibration (like a Hurdy-gurdy).
Needs some more development... Happy hacking!
https://youtu.be/VC64d2IpXoI
Completely free and does not take much time to refer to the free updated ringtones on the website: <a href="https://sonneriefrance.com/">sonnerie gratuite</a>