While discussing traditions with my host family, they told me about el Día de los Reyes Magos, or Three Kings Day. The holiday is on January 6th and celebrates the end of Christmas.
I learned about the tradition of the Cabalgata de Reyes, or the Three Kings Parade, held in Spain on the evening of January 5th. It has floats featuring the Three Wise Men, and they toss candy and sweets to the children to symbolize their journey to bring gifts to Jesus. That same night, children will leave their shoes out for gifts and sweets to be delivered to them overnight. Additionally, they will eat a traditional King's Cake (Roscón de Reyes), shaped like a crown with crystallized fruit and sugar.
The community celebrates this day as it represents a religious moment for them. Given that it symbolizes the moment when the Three Wise Men gave baby Jesus gifts, they consider it a main gift-giving holiday that brings everyone in the community together.