Pendulum Painting. This would be a great science based lesson for EOY. This was always one of my favorite projects in middle school and I still have all my "drawings" now. Great way to tie a lesson in with this and very inexpensive. - Heart-2-Home
You have to scroll down a bit to get the details, but this looks like a project worth doing! www.handmakery.com
Map of the World: String Art ed.
3 Panel Giraffe String Art Tutorial
Easy Toothpick Painting with Kids | Club Chica Circle - where crafty is contagious