Here are some pictures of the graffiti strategy that I posted about waaaaaaay back when.
My students and I have been reading the Me to We: Finding Meaning in a Material World. There is a part where Marc Keilburger talks about going to Thailand and working in the slums. He learned about poverty, homelessness and child labour. He speaks about how he came with "teenage baggage" and left wiser. So as a class we brainstormed what could be described at teenage baggage and then the students graffiti-ed it on to posters. One side is "positive teenage baggage", and one side is "negative teenage baggage."
The graffiti strategy can involve words, symbols and/or pictures. Have fun, try it out!