General Agency Holiday Cards 2018: Inventive and Creative Send-Offs to the Year Agencies employed humorous, festive and philanthropic approaches to holiday cards Team One's Happy Things is a quirky holiday AR app. Team One By Erik Oster December 18, 2018 It was a long year. Erik Oster @ErikDOster erik.oster@adweek.com Erik Oster is an agencies reporter for Adweek. Recommended videos