This enterprising Livejournaller had a "work-blind" printed on vinyl, depicting him hard at work in his cubicle. He hung the result in his cubicle doorway, so that it appears to the unobservant that he's at his desk pounding the keyboard no matter what the reality.
I had [info]buttercup666 stand in my neighbor's cubicle and take a picture of me hard at work. Then I straightened the photo, undistorted it, and cropped it to the area in the doorway. I took it to Kinko's where they printed it onto vinyl, and grommeted the top with a kit that [info]matrushkaka bought me. The result: The Work Blind. Think of it as the modern version of Jughead drawing eyes on his eyelids so that everyone thinks he's awake and paying attention all day, or Wile E. Coyote painting a tunnel entrance on the side of a cliff.
