Answer:
What is put on a table, cut, but never eaten?
I dig out tiny caves and store gold and silver in them. I also build bridges of silver and make crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs my help. Yet many people are afraid to let me help them.
What comes once in a minute, twice in a moment, but never in a thousand years?
I'm full of holes, yet I'm full of water.
You will find me with four legs, but no hair. People ride me for hours, but I don't go anywhere without needing to be tugged. Jerked or turned on, I always manage to be ready for work.
I can only be played on a windy day