Locations
The town area that Bonnie and Clyde walk through just after the opening of the film has visibility damaged buildings, whether it be graffiti written over walls or large omissions of paint. This suggests that the area is not one that was well looked after, especially since the film takes place during the Great Depression.
The farmhouse that the characters sleep in has very little done to it in order to keep trespassers away besides a sign, showing that in a time of high financial struggle, there was likely so many properties repossessed by banks that they just ended up deserted and left empty.
Interior Sets
The black and white film playing in the cinema scene reinforces the fact that the film, despite being produced and released in the late 60s, takes place in the 1930s.
The inside of the farmhouse is empty, creating the idea of abandonment. The broken windows also suggest a lack of care towards the building after being repossessed by the bank.
Costumes
Clyde is shown to wear a suit for the majority of the film, suggesting that his history of theft has given him the money to dress in more expensive clothing.
Bonnie also dresses in more valuable clothing, her clothes changing throughout the film as her and Clyde continue their country-wide robberies.
Props
The police badge that Frank Hamer wears builds an image of authority and power, therefore when the group take it from him, it signals a moment of weakness.
Newspapers are seen multiple times throughout the film as the way that the characters read about themselves, the most impactful scene being when Clyde angrily reads how he is being portrayed as leaving his brother to die and disagrees with this interpretation of the events.