I remember back when I was a kid (early 70s), I got a prize out of the Cracker Jack box that was a drawing toy-thing.
It was a plastic square stencil-like thing. It was divided into four sections. You would fill in the stencil on one corner and line up the other three sections and do the same. When you finished, you’d have a complete picture.
Anybody else remember this? If so, where I could find one?