I really like these gourd banjos:
Here’s a guy building one:
It’s a different vibe than the traditional banjo. I found an entire album of gourd banjo music by Adam Hurt you can hear/purchase here.
No resonator and no frets. I’m going to have to make one. Tanning the skin seems to be the hardest part.
I saw that Foxfire Book III covers making gourd banjos. I just bought a copy and I’ll report back later.