Jennifer Garner  and Ben Affleck  spent Mother's Day  taking their daughters, Seraphina and Violet, to Tobey Maguire 's son Otis's birthday party in LA. Violet and Sera were both carrying colored pencils, and Sera had a balloon animal in hand as they made their way to the festivities. It was their second soiree this weekend, with the girls attending another birthday bash on Saturday, as well. The Garner-Afflecks are all back home after several months of travel for both parents. Ben has been busy crisscrossing the Middle East scouting locations for his next directorial project, Argo, while Jen spent some time down South recently filming The Odd Life of Timothy Green. Since she returned to California, she's been back to her usual routine of school runs and errands but also made time for charity. Earlier this month, she played sports with some local kids as part of her efforts with her favorite nonprofit, Save the Children.