Answer:
You will always find me in the past. I can be created in the present, but the future can never taint me. What am I?
I am the signature stroll of ducks and penguins
Taken from a mine and then locked up in a wooden case. I am used by students everyday.
When set loose I fly away. Never so cursed as when I go astray.
I am a kind of coat that can only be put on when wet. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?