I have been inventing and performing on instruments of my own invention since 1981. Below find images and sounds of many of them.
My principle instrument. A wringer washing machine lid found behind Castle Furniture and Appliance in Worcester. The body used to be guitar-like, but now it is cello-like. Electronics on the neck. Played with bow, mallets, fingers, erasers, and stuff.
MP3: Squeeked
Lid
MP3: Acoustic Bowed Lid
MP3: Cheesy Lid
MP3: Percussive Lid with Delay
MP3: Sequential Lid
Two organ pipes, an Electrolux vacuum cleaner, and various hoses and hardware. Nearly all found on trash day. Played like an acoustic Theramin.
MP3: The Electroluxopipeophone
The motorized vehicle goes round and round until the batteries wear out.
MP3: Circular
Reasoning 1
MP3: Circular Reasoning 2
Not pictured, the Dremelid is just a wringer washing machine lid played with rotary tool using a grinding bit. Lots of sparks, which makes it a bit dicy to play in some spaces.
MP3: The Dremellid
More of a concept than a functioning instrument yet. still working on it.
MP3: Spring Back
This is no longer a standalone instrument, but is now part of the Bass Rake.
MP3: Plucked
Raque Treated 1
MP3: Bowed Raque Treated 2
Invented by the Late Scott Haig.