Enjoy a pop-up pumpkin party with Columbia Play Project‘s mobile children’s museum from 9 a.m. to noon Oct. 28 at the Artillery Barracks at Fort Vancouver, 600 Hatheway Road, Vancouver. The free morning play and exploration features hands-on activities, silly experiences that make learning fun, the opportunity to try a mini-pumpkin launch and glow-in-the-dark giveaways. Costumes are encouraged. Learn more about Columbia Play Project at columbiaplayproject.org.