Cinemas with Launderettes next to them! What a stunning idea! Especially with a local student population! Bargain offers during the day... "Wash and Watch!"
[Update:] And more intriguingly pirouetting; it should be listed under all-time great inventions, like the wheel and sliced bread. Why does no-one ever mention the inherent simplicity but ultimate fantasticness of pirouetting over just spinning? You don't get dizzy! Who thought of that?! Genius!