Answer:
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 am a shimmering field that reaches far. Yet I have no tracks and am crossed without paths. What am I?
I am a precious stone as clear as diamond. Seek me out while the sun's near the horizon. Though you can walk on water with my power try to keep me and I'll vanish in an hour.
When you take away the whole from me, there is always some left. What am I?
What bone has a sense of humor?
Give it food and it will live, give it water and it will die.