This Canvas String Art Graffiti project is fun for kids and adults alike. While this is a spray paint project, you can use alternative paints or dyes for younger children. Makes a fun summer art project when your kids get bored.
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).