Spring chalk art: Have students work together in groups: brainstorm and sketch inside, then use a class period to draw w/ chalk on blacktop, then pose together laying on blacktop. I stand on a ladder and take their pictures!
popping paint filled balloons on a canvas . put paint tape to cover the place to stencil, put paint filled balloons around canvas, pop with darts (slingshots?), let dry, use stencil to add silhouette - love it! Or do the crayon melting thing!