All Weekend

Elephant & Piggies "We Are in a Play" - Smithtown. This musical experience is ripped from the pages of Mo Willems's children's book. Runs through April 11. Cost: $15.

Leprechaun Trap Craft - Port Jefferson. At the Maritime Explorium, kids can build a trap to try to catch a leprechaun. Cost: $5/person.

Weekend Workshop - Sayville. Each weekend a dedicated instructor at Mini Monet will lead you in a craft/creation. Cost: $15.

Seal Cruise - Freeport. Hop aboard the Captain Lou in Freeport, hosted by the Riverhead Foundation to search for harbor seals and other mammal life. Runs through April 12. Cost: $19-$26.

Messy Afternoons at LICM – Garden City. At the Long Island Children’s Museum, all weekend long. Cost: Free with museum admission.

Explorer Family Backpacks – Uniondale. Pick up a backpack and explore the world through this Hofstra University gallery. Cost: Free.

Saturday, March 14.

Open House: The Center for Science Teaching & Learning - Rockville Centre. Learn about programs, camps, day trips, nursery school, scouts and more. Cost: Free.

Irish Pirates & Flag Workshop - Cold Spring Harbor. At the Cold Spring Harbor Whaling Museum, kids can discover Irish pirates who ruled the seas. Design your own Jolly Roger to hang at home. Cost: $8/child, $7/sibling.

Lucky Leprechauns - Garden City. At the Long Island Children's Museum, celebrate St. Patrick’s Day with leprechauns! Leprechauns are mischievous fairies in Irish folktales that are able to grant wishes. Create adorable leprechaun finger puppets and bring some luck o’ the Irish into your home. Cost: Free with museum admission.

Jump N Jackpot - Great Neck. At Pump It Up, kids can enjoy jumping, bagels, beverages, crafts, etc. Each child will receive a raffle for a future free jump. Cost: $19.99/child (reservations required).

Paints and Patterned Printmaking - Bridgehampton. Adults can assist children ages 3-6 with this art project at the Children's Museum of the East End. Cost: $22.

Cactus Head Puppets - The Pied Piper of Hamlin - Sag Harbor. At Goat on a Boat Puppet Theatre, this is a puppet show. Cost: $12 for everyone, $10 for members and grandparents and $8 for children under three years or additional child.

Saturdays at the HUM - Hempstead. At Hofstra University, families can explore hands on art and activities.

Pinkaliscious: The Musical - Sayville. At CM Performing Arts Center, enjoy this live performance. Through March 14. Cost: $12+.

The Wizard of Oz - Bellmore. Live production at The Showplace. Runs through March 29. Cost: Tickets are $10.

Science Saturday at the Long Island Science Center – Riverhead. Enjoy a day at the Long Island Science Center. Cost: $5/person.

Sunday, March 15

Irish Festival - Hempstead. At Hofstra University, celebrate Irish culture with music, food, dance and more. Cost: $6 Adults, $5 Senior Citizen, 12 & under free.

St. Patrick's Day Party - Bellmore. At As You Wish, you can choose between two party times. Both include face painting, green manicures for girls, green hair for boys, shamrock tattoos for all, two holiday crafts, pinata and party games, green bagels and juice. Cost: $35/child.

St. Patrick's Day Bash - Amityville. At Darlings & Divas, kids can enjoy a shamrock-inspired makeover with mini-manicure, makeup application, hairstyle with washable color, make-your-own themed t-shirt to wear on St. Patrick's Day, pizza lunch, dessert, drinks and a dance party. Cost: $34.99.

Lucky Lollipop Party - Bellmore. At Chocolate Works, kids can create chocolate lollipops and decorate them. Cost: $20.

Seatuck Family Nature Club - Islip. These programs will be geared around the current season and include topics such as seasonal birds, tremendous trees and signs of the season. Cost: Free.

Lego Club - Bridgehampton. Enjoy two hours of Lego fun every Sunday at the Children's Museum of the East End. Cost: $10/admission.

Sunday Kids Club - East Hampton. Drop off kids for a 9am-12pm kids camp at Hampton Kids. Cost: $30-40.

Main photo: Leprechaun Trap Craft at the Maritime Explorium.