Answer:
What do people spend a lot of money on every year, but never want to use?
I dig out tiny caves and store gold and silver in them. I also build bridges of silver and make crowns of gold. Sooner or later everybody needs my help yet many people are afraid to let me help them.
I have roots nobody sees. I am taller than trees. Up up I go but I never grow.
By myself, I'm practically nothing. Worthless as a leader, but when I follow a group, their strength increases tenfold. What am I?
I stand in one place yet I fill a whole room. I can be filled with molten rock and come in every hue.
Why was the cook arrested?