David Lindley, better known as a "go to" sideman on a ton of big albums out of LA in the '70s, does these one man shows with all kinds of oddball stringed instruments. Those who know him love him. If you have never had an opportunity to hear him live, please try to do so. He does tour occasionally. He's a virtuoso with a sick sense of humor.
Streichmelodion ??
Fell into a Wikipedia blackhole and found articles about very unusual instruments, one was the Streichmelodion. Which led me to youtube videos to hear them and also other rather unique instruments. Thought some of you might like learning and hearing something new. Enjoy!