Not advocating this in any shape or form, but Dtagno’s built a large pole for housing 22 spray cans that simultaneously attack passing trains with graffiti. If only the Berlin street-artist could put that enthusiasm to better use.
These skaters attached a remote control spray paint can to the bottom of their skateboards. That way, whenever they would skate, a trail of paint would follow their path. It all makes for chaotically colourful artwork.