The dream of the male hockey fan in the arena: Running to the men's room for a perfectly-timed visit, expelling his beverage of choice and hustling back to his seat without missing a single faceoff.

Hey, we’ve all been there, right? You’re super bummed your favorite stadium is being torn down. You want something to remember it by. You have $5,000 burning a hole in your pocket. Yes, $5,000. You’ve ...