There's only one prop in this shot- unless you're referring to the entire series. I have more that I'll post in the next few days, some of which have no props (other than a chair, which I don't think is really a prop).
The prop is telling a story. It's a story for the viewer to create. With the ones with the bowl, it's a graphical element - contrasting the hard, metallic circular shape against the organic human figure. The mirror ones are also storytelling/metaphorical.