This exists: the Snazzy Napper, a "sleep and privacy shield" that "blocks out light." The extra large version even doubles as a blanket! In reality, though, it's possibly the stupidest product we've ever seen advertised. Inside, the secondhand embarrassment-inducing commercial.
[There was a video here]
Is there really anything else to say? Of course there is! Which is why I'd like everyone to mention their favorite part of the ad (read: the part that made you facepalm the hardest) in the comments.