Floating Islands is a sound-light-installation originally deployed on Berlin’s river Spree that consists of 50 vacuum cleaners, plastic bottles and illuminant. The installation takes the form of large orchestra of sound and “consists of fifty small ‘islands’ that float and produce sound in a 60 by 15 meter formation. The base bodies of the ‘islands’ are constructed from self-swiming red hard plastic buoys, self-build flutes made from transparent plastic bottles are fixed on top of the buoys and a battery of 50 vacuum cleaners is connected with the ‘floating islands’ via a hose system.” Pretty elaborate and you defintely wont want to be swimming in the water when the vacuum cleaners are running!
Also: their main site has links to other domestic appliance projects that RULE like a composition for 104 Washing Machines! So Awesome!