Coca-Cola
A Mini Marvel
Here's a really big Super Bowl commercial for a really small can of Coke.

Custom mini cans feature Hulk,
Ant-Man, Falcon, Captain America, Black Widow, and Iron Man.
There were six easter eggs in the commercial––including phone numbers, a Snapcode, URLs, and the coordinates of the lab––which led to thousands of limited edition Cokes and prizes. Fans found them all in a week.