Gun: The first prop is a gun. The gun shows that the character needs to protect themselves, provoking a sense of danger.
Gas Mask: The prop gas mask also adds to the sense of danger, showing the area is hazardous. Furthermore, it adds mystery to the main character by covering their face.
Hazmat Suit: This prop has the same effect as the gas mask. It shows the area is hazardous, adding to the sense of danger, and makes the character more mysterious by covering them up.