Situation: I am facing some file cabinet, there is a dolly behind me.
Alternative situations: I am looking for a document in the file cabinet because I did not find it in the box located on the floor to my right. When I find it, i'll put it in the house on my left. I closed the curtain because it is too sunny after I filed some documents in the file cabinet.
Question: If I need to throw something away, what can I use behind me?