Art made by assembling disparate elements often scavenged by the artist, sometimes bought specially. The practice goes back to Picasso's Cubist constructions, the three dimensional works he began to make from 1912. An early example is his Still Life 1914 which is made from scraps of wood and a length of tablecloth fringing, glued together and painted. Picasso himself remained an intermittent practitioner of assemblage. It was the basis of Surrealist objects, became widespread in the 1950s and 1960s and continues to be extensively used e.g. By the YBAs.