Fortnight had a big—and booming—idea for client Yasso Frozen Greek Yogurt: A truck with a sound booth where visitors were asked to scream for ice cream. If one screamed loud enough, it said, "Boom goes the ice cream," and the person was given a free Yasso bar. Combined with out-of-home, digital and social, the effort outperformed the client's expectations, the shop says, and led to another assignment redesigning the product packaging for Yasso's new pints.

For Foodstirs, a company co-founded by Sarah Michelle Gellar that aims to make baking easy for busy parents, the shop created the cheerful "More Flour to Ya!" campaign, which amusingly demonstrated how the product can turn anyone into a baking "baller."