Answer:
I'm a god. I'm a planet. I measure heat.
What is it that you ought to keep after you have given it to someone else?
What instrument can you hear but never see?
It has the biggest wall and is also used when drinking tea.
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?