One of my instruments is a fretless dulcimer type thing built from a giant gourd I found at the NC farmers market many moons ago. I call it a "gourdtar." (Clever, I know.)
It looks like this
Here's what it sounds like with my band when I play it slide and drone style (using a slide like a noter, essentially):
Wire Mountain Shindig by twangdarkly
It's tuned CGC -- this tune is essentially a mixolydian piece.