My wife will not allow me to purchase a banjo. She says that if I get a banjo then I'll insist on playing it. And she's right.
Here is a song about banjos that includes no actual banjos.
In addition to the material that I recorded, I used a few sounds from the Freesound Project:
Reverse Opera Rough and Glitchy - I have used this sound before.
Nothing to Lose Noise
Nothing to Lose Noise 2