9am–5pm Eastcoast National Baseball Card Show Ages: AllExpo Sports Westchester County CenterWhite Plains
10am–7pm LEGO DREAMZzz: Agents Wanted Event Ages: AllAttractions LEGOLAND Discovery Center WestchesterYonkers
Noon–4pm Family Art Workshop: Sculpto-Pictoramas Ages: 5 and upArt Classes Hudson River MuseumYonkers
Noon–4pm Family Science Workshop: Tiny but Mighty Plant Cells Ages: 9 and upArt Attractions Hudson River MuseumYonkers
1–2:30pm Harvest + Craft: Nail Polish Ages: 5 – 12Classes Craft & DIY Hilltop Hanover Farm & Environmental CenterYorktown Heights
1:30–3:30pm Playland’s New Historical Ferry Tour Along Westchester’s Sound Shore Ages: AllTours Rye PlaylandRye
Brooklyn Paper Not playing around! Coney officials unveil new Gravesend Houses playground after years of advocacy