Kinder Surprise is a sweet made in Italy in the form of a hollow chocolate egg with a small toy inside. I used to bring these sweets as a souvenir from Italy to my children but now that they are available in the USA I just buy them on special occasions, like Christmas and Easter.
This is the original packaging of the egg.
The inside of the hollow egg, made of white chocolate, with the plastic shell that contains the toy.
The unassembled toy