To Ringer, promises are priceless, so she is reluctant to give them, yet she still promises to return to Zombie and their group and to protect Teacup. Promises symbolize the instability of the world presented in this novel.
Pound cake's Wrapper
Pound Cakes wrapper symbolizes his search for food during which his three-year-old brother disappeared. It is also the reason for his nickname, referencing the fact that he is overweight.
Teddy Bear
Sam's refusal to seek comfort from his teddy bear because he is too old symbolizes the harsh conditions of his world that forces him to grow up too quickly.
Bomb
The bomb implanted in Megan symbolizes Vosch's ruthless cruelty, while Cassie and Evan's efforts to save her reveal their humanity. Poundcake