I don't know how long this has been around, but it was a new discovery for us today! Nathan loves drawing (or telling me what to draw) with sidewalk chalk. He could stay out for hours with chalk. I saw this at walmart today and I just had to give it a try. It came with three big bottles of paint, a paint brush, a roller paint brush, and a tray for your paint.
I have to say, this is going to be one of our new favorite things to do outside!!