Austin Kleon, who calls himself "a writer who draws", leaves wet tea bags on sheets of paper and draws cartoons using the shapes that they make. He explained his creation process in an interview by saying:
“Not-knowing what image will show up is part of the game,” said Kleon. “You get to let your subconscious take over. It’s like a Rorschach inkblot test. You could show the tea stain to 100 different people, and they’d see 100 different images.”
Link via Althouse