(The following is reprinted with permission from www.mentalfloss.com).

During World War II, the British secret service hatched a master plan to smuggle escape gear to captured Allied soldiers inside Germany. Their secret weapon? Monopoly boxes. The original notion was simple enough: Find a way to sneak useful items into prison camps in an unassuming form. But the idea to use Monopoly came from a series of happy coincidences, all of which started with maps.

Smooth As Silk

Maps...