Answer:
I cannot be bought, cannot be sold, even if I'm sometimes made of gold. What am I?
I describe a toilet cleaner as well as one of Santa's reindeer
I come with a train and go with a train and the train doesn't need me but can't go without me.
If a plane crashes on the border of US and Canada where do they bury the survivors?
What has 4 fingers and a thumb but is not living?
What never gets any wetter no matter how hard it rains?