Well, earlier this fall during BYO Cup Day in Australia, 7 Eleven, along with its agency Leo Burnett Melbourne, took the cup idea up a notch by allowing consumers to fill up radio ads with Slurpee.Come again? Yes, radio ads became drink containers in the inventive campaign "Slurpee Sound Cup" campaign. 7 Eleven took the sound waves of three radio spots, themed around Viking opera, Brazilian soccer fans and randy whales, and transformed them into a series of distinctive 3D-printed vessels that were given away to Slurpee fans for the big day. Consumers could also download the 3D files and make the cups themselves. video