Answer:
Always in you, sometimes on you. If I surround you, I can kill you. What am I?
you hold my tail while I fish for you
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
I am a tool for fairies.
I run smoother than any rhyme I love to fall but cannot climb.
What did the piece of wood say when he saw the screwdriver and screws approaching?