Answer:
What can one catch that is not thrown?
What jumps when it walks, but sits when it stands?
They come at night without being called and are lost in the day without being stolen. What are they?
I have cities without people forests without trees and oceans without water. What am I?
I go from house to house a messenger small and tight. Whether it rains or snows I sleep outside at night.
I am used for light yet I am solid. Without me you would feel enclosed. I hate being touched especially with a lot of force. I like to be in buildings.