Please call or check the website before you go as event dates may have changed or canceled after press time.

Available during fall gallery hours (Thursday to Sunday from 11 a.m. to 4 p.m.) at the Whaling Museum, 301 Main St., Cold Spring Harbor, follow in the footsteps of the daring Long Island spies who helped win the Revolution! In this self-guided museum activity, discover the secrets of the Culper Spy Ring as you hunt for hidden messages around the museum and use historical ciphers to crack secret codes and collect clues. Complete your quest and earn a junior spy kit to use in your own covert ops! Admission fee + $10 per participant. 631-367-3418

Sweetbriar Nature Center, 62 Eckernkamp Drive, Smithtown presents First Steps Into Nature for children ages 2 to 5 on Sept. 18 and Sept. 25 at 9:30 a.m. Little ones will learn about nature through hands-on interaction, music, crafts, stories, play and more. $20 per child per class. To register, visit www.sweetbriarnc.org. 631-979-6344

Cold Spring Harbor Fish Hatchery, 1660 Route 25A, Cold Spring Harbor presents an Amphibian Adventure on Sept. 21 from 10 a.m. to 5 p.m. Create a 3D frog craft that bounces on a lily pad and learn fun facts about amphibians during a Fact vs. Fiction scavenger hunt. Admission is $7 adults, $6 seniors, $5 children ages 3 to 12. 516-692-6768

Emma Clark Library, 100 Main St., Setauket hosts a Crafternoon on Sept. 21 from 2 p.m. to 3:30 p.m. Families with children ages 3 to 11 are invited to stop by the Library to create a work of art with recycled materials. Open to all. No registration required. 631-941-4080

Suffolk County Farm, 350 Yaphank Road, Yaphank offers a Parent Chat and Play on Sept. 24 from 10 a.m. to 11 a.m. Bring your little ones (ages 1-5, siblings welcome) to discover this outdoor space which allows for plenty of messy play, building and interactive art exploration as well as a music and movement area. While your little ones play nearby, Parent Educators will be available to answer your parenting questions. Registration is not required, but you must to sign in at the welcome center. 631-852-4600