Answer:
I'm light as a feather, yet the strongest man can't hold me for more than 5 minutes.
What relies on columns but isn't a house, and asks for help but can't speak itself?
I walked and walked and at last I got it. I didn't want it. So I stopped and looked for it. When I found it, I threw it away.
What flies forever, Rests never?
If eleven plus two equals one, what is nine plus five equal to?
I can only be played on a windy day