Mommy and Me: Music and Movement class, Wednesdays, Oct. 16-Nov. 20, 9-9:45 a.m., Darien Arts Center, 2 Renshaw Rd., Darien. Geared toward children ages 18-months to 3 years and their parents and caregivers. Registration/Info: darienarts.org, or 203-655-8683.
Family Sleepover, Oct. 19, 6 p.m. check-in, Maritime Aquarium, 10 N. Water St., Norwalk. Children ages 5 and older with accompanying parent or caregiver stay at the aquarium overnight. Behind-the-scenes tours, dinner, snacks, crafts, an IMAX movie, private seal show and more. Depart Saturday morning by 9:45 a.m. Cost: $80-$85. Advance registration required. Info: 203-852-0700, ext. 2206, maritimeaquarium.org.