Have you heard about the Counterfeit Crochet Project? It's a collaborative art project organized by conceptual artist Stephanie Syjuco.
You can watch a video of her online at:
http://www.kqed.org/arts/people/spark/profile.jsp?id=22692 [1]
And for teachers, there is an educator guide to go with that story.
If you want to participate in the project, you can find out more info here:
http://www.stephaniesyjuco.com/ [2]
Links:
[1] http://www.kqed.org/arts/people/spark/profile.jsp?id=22692
[2] http://www.stephaniesyjuco.com/
[3] http://crochetme.com/forum/question-diguised-greetings
[4] http://crochetme.com/forum/tunisian-anyone