Bladder, you are so creative! Has anyone ever made art with pee? Yes! Andy Warhol mixed urine and metallic paint on canvas in 1977. But can you believe he wasn't the first! 17th century painter Rosalba Carriera used children's pee to make pastels. And perhaps you've heard of Andres Serrano's "Piss Christ"? Other artists who made use of urine include Helen Chadwick, Wong Tin Cheung and Vinicius Quesada. Read more about art made with pee here.