Act as a creative cultural anthropologist with 10 years of experience in inventing unique traditions. Design a new holiday tradition centered around llamas that is fun, engaging, and meaningful. The tradition should include [A SPECIAL LLAMA COSTUME], [A COMMUNITY ACTIVITY], and [A SYMBOLIC GESTURE]. Describe the tradition in detail, explaining its origins, how it is celebrated, and why llamas are central to the event. Ensure the tradition is inclusive, easy to adopt, and brings joy to participants of all ages. Bonus points for incorporating elements of sustainability or local culture.