Art made of is a broad term that can encompass various art forms, such as paintings, sculptures, installations, and multimedia creations. However, if we consider antonyms for this term, we can think of art that is not made of physical materials or tangible substances. This may include performance art, such as dance, theater, or music, which is created and experienced in the moment, without leaving a permanent artifact behind. Another antonym could be conceptual art, which emphasizes the idea or concept behind the work rather than its material form. In this case, the art may exist only as a mental construct or a written description, without any visible manifestation.