could be a fun project idea. Create an opening of some kind. What creature would be behind? Fun, texture and color study. Great writing idea to describe whats behind the door and completing with an art project
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!