Not sure I like this, but it is different. Wood Blocks are place on benches to press messages into people's skin making them a walking advert. See more here: Bench Press: Cheap And Sessy Advertising | Geekologie - Gadgets, Gizmos, and
If your not familiar with the work of Rogelio Naranjo you should be. He was a political cartoonist from Mexico in the 1930's below is a sample of his great