Choco is a fictional chocolate for children between 5 and 8 years. Its weight is the necessary quantity that a child needs chocolate per day, only 30g. The idea was to create a package that refer to the infant universe. In addition, the package should contain some interactivity and reusability. This factor has been created starting from a puzzle which each package has a part of a character. When joining several packages, the child could create funny characters.