I think that, in certain genres of music, the washboard is so commonly used that it ought now to be regarded as an actual instrument.
I agree. Also blowing into a liquor jug.
To the point that it’s come to be the term for music groups which employ homemade instruments.
The “Bucket Man” used to be a fixture on the streets of San Francisco, playing his homemade drum set made of discarded buckets, water jugs, paint cans, and the like (unless you count anything you bang on with a stick to be a “drum”, and therefore a musical instrument). Sadly, the Bucket Man passed away a few years ago.
I hope whoever was recording that tipped him afterwards. If it’s worth recording, then it’s worth paying for.
From Jet Lag: The Game, Beethoven’s Ode To Joy performed by blowing on bottles.
Uakti (WAHK-chee) was a Brazilian band which made all their own (mostly wind) instruments. They recorded a bunch of Phillip Glass music:
Very super cool. Grupo Corpo (Brazilian dance troupe) used Uakti music for some of their performances.
I can’t easily find a recording of his original compositions, but here is Le Pétomane:
I can play the drum solo from In a Gadda Da Vida on my wet ass in the shower.
“Who used up all the hot water???”
That is impressive. 
Don’t be silly. The drum solo by itself doesn’t go on for 17 minutes.
(pause)
It just seems like it.
The Australian band Hunters and Collectors initially had a lot of ad hoc non-instrument percussion. A friend saw an early gig of theirs where there was a hot water cylinder tank being pounded at various points, but reportedly it lacked the big gong sound they were hoping for.
The members of Fulu Miziki build their instruments from items found in trash piles and landfills.
Songwriter/producer Joe Meek recorded a toilet flushing and played it back in reverse to create the sound of a rocket launch for the Tornado’s “Telstar”(1962)
That’s probably the coolest factoid in this thread. Thanks for sharing.
Leroy Anderson (of The Typewriter Song, in the OP) also had a minor hit with The Syncopated Clock. In one point in the song a number of clocks strike the hour all at once.
Have we overlooked Blue Man Group?
I posted this in the ‘interesting facts’ thread:
Jimi Hendrix used a home-made “kazoo” (wax paper over comb) in his Cross Town Traffic song.
Ice percussion:
