Answer:
You throw me out when you use me and take me in when you are done.
I cannot be bought, cannot be sold, even if I'm sometimes made of gold. What am I?
I may be of the eye, in order I am pie. In my center there is a star, I keep medics where they are. What am I?
I am all around you, but you cannot see me. I have no throat, but you can hear me. Valued during summer but despised in the winter. What am I?
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty. What am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?