Rewind to about 1950. That's when Russ Gremel of Chicago had $1,000 to invest. He spent it on Walgreen's stock, because he figured women would keep going there for makeup. The stock went through the roof, but he never sold it. He never married, so he never needed the money. He never even told anyone he had it.

He was planning to will his fortune of over $2 million (28,000 shares) to the Illinois Audubon Society, but he decided it would be more fun to donate it now, and see what they did with it. They used his donation to set up a 395-acre wildlife refuge called the Gremel Wildlife Sanctuary. It's about 100 miles west of the Windy City. The sanctuary was recently dedicated to his name.