Halloween
The pagan rituals of earlier times evolved into fun and games.  For example, the concept of connecting to the dead was replaced with the more lighthearted idea of telling the future.  Bobbing for apples became popular as a fortune-telling game on All Hallows' Eve: Apples would be selected to represent a woman's suitors, and the apple she ended up biting into would supposedly represent her future husband.  Halloween posed a huge matchmaking opportunity for young women in the 19th century.