Answer:
What gets bigger the more you take away from it?
What can you never get rid of when you lose it?
I am a king but also a common device of measure. What am I?
One might hang a locket from this
The buyer doesn’t want it, the producer doesn’t need it and the user doesn’t know their using it.
Cycle Cycle Cycle.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?