Unleash your creativity while designing a marble maze out of everyday household items. Bring your junior scientists to enjoy a kids-only, interactive science hour. Adults can head out into Spring Lake Park for rejuvenating, kid-free time in nature. Activities are ideal for kids ages 6–12. Saturday, February 14 from 1–2 p.m. Environmental Discovery Center at Spring Lake Regional Park, 393 Violetti Rd., Santa Rosa. Registration required at tinyurl.com/6yh5rp5k.