The Great Candy Exchange is a chance for kids to wear their costumes one more time, win prizes, have their faces painted, enjoy balloon artists and live shows, free healthy snacks, and donate their leftover Halloween candy to the troops through the USO of Missouri. (Candy donation is not required to attend this free event.)
At the Healthworks Kids Museum from noon to 4 p.m.
More information and to register: hwstl.org.
LEGO Club at the St. Louis County Library is a free opportunity for kids to gather and have fun building with LEGO bricks. LEGOs are provided.
Visit The Magic House for Toddler Time, a special early-morning program for toddlers. Children age 1and up can take part in exhibits and exclusive interactive activities designed just for little ones. There are new themes every week!
Bring your little ones, 0-18 months, to Baby Bookworms Storytime to enjoy songs, stories and more.
From dry ice experiments to learning all the fun things about volume and density, kids can see how science is used in everyday life. Junior Scientists will create experiments and make their own observations during Super Gross Out Science.
Come over to the dark side and meet the amazing birds that exist by moonlight. Owl Prowls are an opportunity for families to learn about owls from the naturalists at the World Bird Sanctuary.