I loved doing this in art class. Art With Mr. E: Line Design w/Shading - Grade Very cool, fun art shading project from Art With Mr. E. he's an elementary art specialist. Try this with your kids (but I think grown ups would enjoy this too).
The paper plate is GENUIS! ----Blind contour drawing is a fun way to see how accurately we can draw when we observe something very carefully, by looking at it and not looking away. - Using a paper plate is a great way to accomplish this.