There are billboards all over New York city for a company called Manhattan Storage. They're always interesting and often provactive. The current ad feature knitting and reads, "Maybe we make storage too easy."
I've been wanting to get a photo of one but driving down the Westside Highway at 50 mph. makes that pretty difficult. I saw this one on the subway. I was still still in motion so it's a bit shaky...but you get the idea.