Answer:
I have hundreds of ears but cannot hear a thing. What am I?
I am a little piece of paper, yet sometimes hold lots of value. I am all you need to get into big events, but will cost you. I am an important part of travel. And if lost, you're not coming. What am I?
I am a nut with a hole. What am I?
I am in the past never in the future. I don't exist but have existed. I saw what you saw and that is what I will ever see.
What can fill a room but takes up no space?
The answer I give is yes, but what I mean is no. What was the question?