The theme of the book revolves around the importance of protecting the innocent and understanding empathy, and mockingbirds are symbolic of this. The title itself refers to the cruel act of killing a harmless creature, and the story highlights how doing so is morally wrong.
Instead of spending their money on something harmful, the children:
* Used it for simple pleasures: They likely spent their money on things like candy, soda, or small toys.
* Saved it: The Finch children were generally responsible with their money and might have saved it for future purchases.
The book does not specify how the children spent their money, but it emphasizes their respect for nature and their overall good character. It's important to understand that the title "To Kill a Mockingbird" is a metaphor for harming the innocent, and the story focuses on how prejudice and injustice can be devastating.