on stove top burner covers. Alas, they're a bit burnt nowadays as I simply applied stickers and oversprayed them with clear, heat-resistant Rustoleum. (All part of the learning process.) Ideally, I wanted them painted on, but didn't know how or where to do that.
A future possibility/fantastical dream is to do it right by updating the picture and painting it onto trivets for sale. But that's only a vague possibility.