For Magritte we used crayon resist to create cloudy paintings that we cut into shapes for animals, etc. and collaged onto painted backgrounds. Again, a bit too broad for some younger kids (what was I thinking when I set these goals?!)
Another camp instructor did the same project with her group, but she was more directed and gave them limited choices for their subject. I like hers much better and I will steal it for the future! Here are two works from her camp.