Interactive pop-up Museum exhibit based on the book series Potter the Otter, published by First 5 Santa Clara County & created by the Joe Children’s Discovery Museum. Members: Free. Non-members: $16. Infants 11 months & younger: Free. Discounts available for qualifying guests. 10 a.m.–3 p.m. Children’s Museum of Sonoma County. 1835 W. Steel Ln., Santa Rosa. cmosc.org.