You can find examples of allusions and metaphors in every chapter of this novel - even on every page. For example, in the first chapter, Montag walks into his home after talking to Clarisse and realizes he is not happy. His wife, Mildred, is home watching her screens and she looks up at him:
Two moonstones looked up at him in the light of his small hand-held fire; two pale moonstones buried in a creek of clear water over which the life of the world ran, not touching them.
The "moonstones" are Mildren's eyes.
Also, there are tons of allusions in this novel. Why? Because the firemen are book burners. Every time they are talking about books, they are alluding to authors. Again, in the first chapter:
"It's fine work. Monday bum Millay, Wednesday Whitman, Friday Faulkner, burn 'em to ashes, then bum the ashes. That's our official slogan."
This allusion is to poets Edna St. Vincent Millay, Walt Whitman and author William Faulkner, all authors whose books were burned by Montag and his fellow firemen.