Best riddles with simple answers

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 am I?

We hurt without moving. We poison without touching. We bear the truth and the lies. We are not to be judged by our size. What are we?

What tea do hockey players drink?

I am pronounced as a one letter alphabet. I am written with three letters. I am complete with just two letters. I am double. I am blue I am black I am brown I am gray I am yellow and I am green. I can read from both ends. I appear the same every way! What am I?

What comes once in a minute, twice in a moment, but never in a thousand years?

What do you call two birds in love?

What do you call a rabbit with fleas?

What makes grown men cry, but humanity would go extinct without it?

What is seen in the middle of March and April that can't be seen at the beginning or end of either month?

What starts with a 't' ends with a 't' and is full of 't' ?