Powerful Symbols in Literature Like Gogol’s Overcoat?

I'm a beginner exploring literature and was intrigued by how Jhumpa Lahiri twists the symbol of Gogol’s Overcoat in The Namesake. It made me wonder—what are some other powerful literary symbols that hold deep meaning across different works?

For example, Gogol’s overcoat represents identity, loss, and transformation. Are there similar symbols in literature that carry such weight? Would love recommendations and insights!