Answer:
People need me yet they give me away every day.
I can be thin but not fat; in your body but never on your placemat. I'm always better when I'm fresh but you'll never see me in the flesh.
I'm not alive and yet I grow. Just put me next to where it glows. A favorite in summertime best with friends when combined
I am asleep when you are awake I am awake when you fall asleep. I can fly but no feathers to aid my flight.
You buy me to eat, but never eat me. What am I?
I tell people to be careful when handling boxes.