We first saw this idea at the Sacramento Children’s Museum. It was a giant plexiglass wall setting on concrete and you could just paint allll over it and then they would come by and wash it off. Baby D loved it! I loved it too. So I set out to make my own.
I looked around for existing ideas, but all of them were made using wood. I didn’t want wood, because I didn’t want it to start rotting after getting wet from washing or because I was planning on storing it outside.