The German sweet maker that runs the gimmick where kids can exchange acorns and chestnuts for sweets is Haribo. This tradition, known as the Haribo gummy exchange, has been held annually since 1936 at their facility in Germany. Children bring in acorns and chestnuts, which are weighed and exchanged for Haribo gummy bears and other candies. The collected nuts are then donated to animal and game parks for feeding during the winter season. This event draws large crowds, with tens of thousands of people participating each year