Answer:
The thinkers usually hold this body part
Some keep it in a dumpster while others keep it in their trunk.
Take it and you will lose or gain more than all the others.
It covers you, you lose it every day and you'd die without it.
I am a king but also a common device of measure. What am I?
What flies without wings?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?