Dunno much about good/bad banjos, but I reckon a Nailbomb would be just about right once you've got your hands on one :lol: (No point going to a banjo duel without having your weapon loaded with appropriate hardware...)
Anyway, if we are considering "non-guitar" stuff - I am vaguely tempted by the idea of getting some recorders and learning to make some musical noises with them. I've recently heard some amateur recordings of medieval music done on a multi-tracker that make me think that my fear/loathing of the instrument is perhaps unfounded... and that, perhaps, there might be much satisfaction to be gained from this cr@ppy thing... And, by the way, the sound of a well-played recorder ensemble goes extremely well with accoustic guitar stuff... (Might sound a bit "Stairway", I guess, but it's not like they invented the idea)
Like many others, probably, my impressions concerning the recorder were formed between the tender ages of 7 and 10 at school... In fact, being forced to learn this "devil's bottom-probe" of an instrument put me off music altogether and convinced me that I was a complete numpty. It was only a music teacher selecting me for his school choir later at age 11 after a compulsory "audition" that enabled me to re-evaluate the entire subject and to suspect that I could "do music" at all.