Artists use found objects and recycled materials in their artworks by incorporating them into their pieces to add depth, meaning, and environmental consciousness to their work. They may use items like old bottles, newspapers, wood scraps, or discarded metal to create new artwork. This process allows artists to experiment with different textures and shapes while also promoting sustainability and upcycling. The use of found objects and recycled materials can also help artists convey messages related to consumerism, waste, and the environment through their art.