Answer:
I am lighter than air but a hundred people cannot lift me. Careful! I am fragile!
I am so delicious that I require a house to contain me.
I am used to bat with, yet I never get a hit. I am near a ball, yet never thrown. What am I?
I have hands but cannot clap. What am I?
Who keeps the ocean clean?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?