Silliest thing? I slept in a closet when staying at a hotel for my class trip. It was silly, but i'd do it again any time:
It was June. Thus, it was very hot. I turned the thermostat down as low as it would go, 62 degrees. then, taking the blankets from the one bed, and additional blankets from the closet, I made myself one hell of an impromptu sleeping area, where I slept comfortably (the blankets balanced the cold out perfectly) through the entire night.
It was because our school, being so cheap, assigned four people to a 2 single-bed room. There were no cots (You had to pay extra), so I was like, fuck that. My other friend slept in the bathtub, so I suppose I did better than him lol.
So, if you're ever staying at the Sheraton in Toronto (Great hotel, been there are few times now), the closet is always an option.