If you haven't watched children's TV for the past decade, you might be unaware of Art Attack. In it, red-shirted Liverpudlian host Neil Buchanan shows kids how to make all sorts of art projects.
Once each episode, however, he makes what he calls a "Big Art Attack." With an overhead camera watching, he takes over a warehouse floor, or a farmer's field, or a parking lot, or some random piece of real estate, and creates a huge piece of art, often from everyday objects. Usually you can't tell exactly what he's making until it's nearly done, but they are often lifelike drawings cobbled together from sports equipment, or using a riding lawnmower in long grass, or out of table salt on a black floor—or once, from the coordinated turning on and off of lights of skyscrapers on the New York skyline.
If you come across one of his broadcasts, even if you're not a kid, watch. You'll be amazed.