The term found art—more commonly found object (French: objet trouvé) or readymade—describes art created from the undisguised, but often modified, use of objects that are not normally considered art, often because they already have a mundane, utilitarian function. Marcel Duchamp was the originator of this in the early 20th-century.
Found art derives significance from the designation placed upon it by the artist. The context into which it is placed (e.g. a gallery or museum) is usually also a highly relevant factor. The idea of dignifying commonplace objects in this way was originally a shocking challenge to the accepted distinction between what was considered art as opposed to not art.

Cornell, Joseph (1903-72). American sculptor, one of the pioneers and most celebrated exponents of assemblage.
He had no formal training in art and his most characteristic works are his highly distinctive `boxes’. These are simple boxes, usually glass-fronted, in which he arranged surprising collections of photographs or Victorian bric-à-brac in a way that has been said to combine the formal austerity of Constructivism with the lively fantasy of Surrealism. Like Kurt Schwitters he could create poetry from the commonplace. Unlike Schwitters, however, he was fascinated not by refuse, garbage, and the discarded, but by fragments of once beautiful and precious objects, relying on the Surrealist technique of irrational juxtaposition and on the evocation of nostalgia for his appeal.