This poster is to show how logos and signage are seen and represented by kids. (Folk design might be a direction, as it is closer to life and offers something refreshing than a more sophisticated design)
These photographs offers a graphic story of urban signage....(government-sponsored graffiti?)
Another example of folk design.
The Australian Rural Mailbox
I might also touch on the subject of "Helvetica" as a universal fontface choice to discuss the diversity in design.