From Stargirl what did Leo and Archie bury in the desert?

In "Stargirl" by Jerry Spinelli, Leo and Archie bury the remains of a pet rat named "Cinnamon" in the desert. This act symbolizes their connection to life, loss, and the passage of time, reflecting the themes of friendship and the impact of their experiences. The burial also serves as a moment of reflection for Leo, as he grApples with his feelings for Stargirl and the changes in his life.