I had them look at these background stills from the old Road Runner cartoons from Looney Tunes. We talked about a lot of things, such as why the coyote never caught the dang bird and who is faster? sonic or the road runner?
We also talked about the desert setting of the cartoon landscape and how the cartoonists used light and shadow to make the settings somewhat believable.
Each class drew a different still or combination of stills to create a landscape that showed depth and volume through color, detail, and size. The students did a great job with the complexity of the source material and even though they drew the same thing there was a lot of variety in their work due to hand pressure and how fast or slow they made the different lines.