Collaborative Drawings
This post is from 2011 at Briargrove Elementary Art Page. One of the things I love about this lesson is that every drawing is different from every other drawing. Students are inspired to create their own unique creatures.
Katie Gonzales gives directions for how to teach this lesson. A sub could easily follow along. You can get this lesson here: http://katieweymouth.blogspot.com/2011/11/first-lesson-of-year-collaborative.html