A wooden box of "souvenirs"
The reader realizes that Griffin mentions his wooden box "souvenirs" all over the novel to symbolize his power. The wooden box contains things Griffin has stolen from other students to keep as a collection representing his authority. Some of the items in the wooden box include old coins, baseball pins, a pocketknife, and keys, among other things he stole from fellow students. When Griffin looks at the items in the wooden box, they remind him of his dominance over his victims.
The guitar
The guitar symbolizes emotional refuge. When Eric is badly beaten by Griffin, Cody, and Hallenback at the cemetery, he returns home and starts playing his guitar. The guitar helps him to forget the bad things that happen to him. Eric strategically places his guitar in the house because it only becomes his companion whenever he feels depressed.
The law of the jungle (Metaphor)
Griffin and his fellow bullies use the metaphor of the animals to justify their bullying tendencies in school. Eric is unhappy with the trend of bullying weaker students, and he confronts Griffin to demand to know why he likes bullying others. Griffin justifies his bullying by saying, "Kids like Hallenback are always going to get beat on. It's the law of the jungle. Only the strong survive." According to Griffin, any weaker student needs to be eliminated from school if possible. Griffin considers himself the king of the jungle because he makes rules and dominates those under him.
