The Secret of McDonald's Happy Box to Reinvent and Keep on Trending

La Cajita Feliz is one of McDonald’s most recognized icons. Born in 1979 as a surprise package to surprise children, it has evolved to become an emblematic product of the chain’s menu, which has kept in force before consumers increasingly aware of their health and in a stricter regulatory environment, such as the one that currently exists in Mexico. Although McDonald’s has its origin in Illinois, USA, the idea of La Cajita Feliz emerged in Latin…