Answer:
I am filled with garb the price is free. Just return what you don't need.
I'm light as a feather yet the strongest person can't hold me for more than a few minutes. What am I?
I am alive without breath and cold as death. I am never thirsty but always drinking.
I make a loud sound when I'm changing. When I do change I get bigger but weigh less. What am I?
I am one with eight to spare, lest I lose my one. I'm not a number. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?