Toys & materials for kids to explore science, technology, engineering, art & math. Free with museum admission ($8–$16; infants 11 months & younger, free). Discounts available for qualifying guests. Saturdays. 11 a.m.–3 p.m. Children’s Museum of Sonoma County. 1835 W. Steele Ln., Santa Rosa. tinyurl.com/5yx94fkw.