Years ago, I was a warehouse manager for a small manufacturing firm. One day, a shipment came in, packed with foam blocks, instead of the more common peanuts.
Struck by a sudden inspiration, I set up the foam blocks in a circular pattern, with every two blocks supporting a third. When I was done, I had a miniature copy of a famous archaeological site in England.
I turned to my assistant and said, "Look! Foam-henge!"