Symbolic Object
Returning to the same physical object again and again until it means more than what it is. It moves the plot and also stands for the film's main ideas.
Miller's Crossing
Tom's hat keeps coming back. The title sequence shows a hat resting in a forest clearing and blowing away on the wind. Later Tom asks where it went after a drunk night, goes to Verna's door to get it and tells her about a dream where he chases it. The hat comes to stand for his control over his own life.
Blue Steel
The robber's gun is the engine of the story. Eugene Hunt takes it in the confusion and carves Turner's name on a spent cartridge. The missing weapon also makes her look guilty, so the object ties together her career, his obsession and the killings.

