Answer:
I twist and turn and leave a loop. What am I?
I am a box which holds keys but not locks. With the right combination, I may unlock your soul. What am I?
I work when I play and play when I work
I am carried by mad animals.
I must be broken before you can use me. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?