If we had this in Chicago, we’d probably save a ton of money and the Graffiti Busters would be out of business. Imagine taking a seemingly boring white wall and converting it to something beautiful. The city of Alys Beach in Florida does just that with an an art festival dedicated to projection called Digital Graffiti. From their site:

Digital Graffiti at Alys Beach is the world’s first outdoor projection art festival, with artists using the latest technologies to project their original works onto the town’s iconic white walls.

Imagine taking this to an outdoor guerilla-style marketing at night outside a trade show in downtown Chicago, Barcelona or even in your own parking lot. Just need some white walls (easy) and some big projectors (rentable).