April 1st marked the beginning of a big hunt for over 260 artist-designed eggs, which have been hidden throughout New York City’s boroughs. The eggs range from cute to strange and not typical egg shaped, and include contributions from artists in fashion, art and design.

Instead of a basket to collect chocolate goodies, the Fabergé Big Egg Hunt requires a free app that beeps when within a 20-foot range of one of the eggs, and once discovered by 10 people, the secret location of the eggs is revealed on an interactive map – plus hunters get chances to win prizes from Fabergé.

From April 18 –  25 the eggs will be on display at Rockefeller Center, before being auctioned off at Sotheby’s  to raise money for “Studio in a School,” a nonprofit that brings arts programs to NYC schools and “Elephant Family,” an organization that protects Asian elephants.