One of my favorite bands, Sleepytime Gorilla Museum, use a lot of home built instruments like the Sledgehammer Dulcimer (a bass instrument made with piano strings and a guitar pickup) and other things cobbled together from trash and random objects. They also feature a violin in just about every song. Sort of like Meshuggah, Mr. Bungle, and weird early 1900s Dada art combined into one.
I play with a keyboardist that’s a trumpet player by day. Dude’s legit the best musician in the band. He doesn’t always pull out the trumpet, but he’s laid down some cool solos on a couple of tracks. Runs it through a pedalboard with fuzz, delay and pitch shifters on it, it gets pretty wild sounding.