What are these three black cap-like pieces? My son received a secondhand telescope for his birthday. It is a Celestron Powerseeker 114AZ.
I found these three black cap-like pieces separate from other parts. I can’t find what they are or what they do in the instruction manual.
What are they and what do they do?

(click to enlarge)
I am currently using a Celestron Astromaster 130 EQ and I also have a similar type of caps.
Starting from left to right, the first two are caps used to cover eyepiece holder in case the lens is not connected with it, and the last one is a cap for the lens. So I think they might have given you one extra cap as a lens holder.