The GIANT marker!

Art Directors Annual 85, p. 96
Fed Ex, Chuck Tso, Promotional Advertising

Fed Ex wanted an innovative idea to announce its new online office supply store. Oversized sculptures were placed in high-traffic outdoor locations to play off the environment. The yellow highlighter was placed on a curb of a no parking zone; an over-sized bottle of white out on a cross-walk, and an over-sized desk lamp over a bench where people sit to read.
Unity is found in the continuous yellow color seen on the curb and the marker. Emphasis is established by the oversized scale of the replicated marker. Directional clues are also noticed when your eye follows the yellow curb to the marker. Balance is asymmetrcal by position since the marker is leaning. I love the advertising ploys that make you look twice because it's an everyday item in an unexpected place (or size)!