What do people do with cascarones and what are the purpose?

Cascarones are hollowed-out eggs filled with confetti, typically used during celebrations such as Easter and Fiesta in San Antonio, Texas. People often crack them over each other's heads as a playful gesture, symbolizing good luck and joy. The colorful confetti inside adds to the festive atmosphere, and the act of breaking the cascarón is meant to spread cheer and blessings. Overall, they serve as a fun, lighthearted tradition that fosters community and celebration.