Magic Straws, maker of milk-flavoring straws, named Griffin Archer as its creative agency of record. The agency will handle brand planning, creative development, media and public relations across all communication channels. Griffin Archer is a Minneapolis-based full-service advertising agency that was founded in 2013 by three former employees of Carmichael Lynch. Magic Straws, sold in Target and Walmart, among other national retailers, is launching a new brand this year called Milk Magic. This expanded offering led to hiring an agency for future ad campaigns.