When Marcel Duchamp made his “Fountain” by elevating a men’s room fixture to a plinth in a gallery, he encouraged artists to consider the selection of non-art goods as part of the creative act. The gesture may not look as radical a century on, but it continues to inspire; today, you might walk into a gallery and see Darren Bader‘s cats or tacos. The works below, excerpted from Phaidon’s The Art Book, 30,000 Years of Art, and Body of Art, each exploit the arresting presence of the found object.