Trick-or-Treat for UNICEF Pop-Up at Nickelodeon Booniverse

UNICEF USA's Trick-or-Treat campaign sets up inside Nickelodeon Universe for four days, while the park is running as Booniverse. There is an oversized version of the orange collection box, plus a prize wheel, photo booth, face painting, games and giveaways, and you can take a box home. The campaign started in 1950, when a group of Philadelphia kids collected $17 in decorated milk cartons for children in post-war Europe; it has raised close to $200 million since. Free, 10am to 6pm, Thursday October 15 through Sunday October 18.