Answer:
I am bought by the yard but worn by the foot
It flies around all day but never goes anywhere? What is it?
What kind of tree can you carry in your hand?
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 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.
A little house full of meat, no door to go in and eat.