Wall murals for ‘The Zimbabwean Newspaper’ made up of worthless Zimbabwean bank notes. A trillion Zimbabwean dollars can’t buy you any advertising, it can’t even buy you the paper to print your message on, so you might as well turn the money into your advertising.
The goal of giving form to a complex situation like the credit crisis is to quickly supply the essence of the situation to those unfamiliar and uninitiated.