I haven't tried this myself but if you live in Wisconsin, Minnesota, North Dakota, South Dakota, Kansas, Missouri, Illinois, and Nebraska, give it a shot!

My Coke Rewards is giving away free plush polar bears!  This is very similar to the NCAA college t-shirts promotion. You enter "polarbear" as your code and it pops up "Nice you just added 0 points Thank You for contributing to Coca-Cola’s initiative to protect the home of the polar bear. When you purchase six (6) 20 oz. bottles of any product of The Coca-Cola Company you'll get a FREE Plush polar bear! Limit 2 per customer.