|This picture is from Last Visible Dog.|
Over on The Last Visible Dog blog I saw this terrific activity. I admit I have not tried it yet!
This reminds me of a line activity I have done with students in art classes. I think it has lots of potential for making some cards for St Patrick's day, maybe 3D shamrocks. Or heart shapes. Or initials. Or trees. Or Easter eggs (a bit more skill required).