My colleague Mark found this amazing tribute to the inventor of the Etch a Sketch, André Cassagnes. It’s some sort of magic I think because I could never draw anything on one. My son recently bought “the smallest etch a sketch in the world” which is a tiny device but he’s having fun with it.
Then there’s this amazing artwork done on the little red box. How?
If you want to know more, the Wikipedia page on the subject has tons more information.