A Kora! It's an African instrument that is considered a guitar harp, with 21 strings ranging from the size of bass guitar string to fishing wire. The way it is played allows you to play the bass, lead, and rhythm at the same time. Here is a short example of a master kora player Toumani Diabate showcasing the instrument: https://youtu.be/8luhdxS2KuM?si=llpa2YVyIOf77_Nd

As a guitarist I found this guy who transcribed Toumani's work onto a classical guitar, very interesting listen https://m.youtube.com/watch?v=55QnOlXckOk

My other thing would be trippy out there instruments that seem to put you in a different state of mind like the Yaybahar or "The Beam" that the grateful dead likes to break out sometimes

Yaybahar example: https://m.youtube.com/watch?v=_aY6TxC1ojA&pp=ygUWeWVoYWJhciBhdCBpbnN0cnVtZW50IA%3D%3D

The Beam example: https://m.youtube.com/watch?v=0h8o-1IQ5G0&pp=ygUSZ3JhdGVmdWwgZGVhZCBiZWFt