RiddLes, riddles, RiDdLeS

What is common in once a minute, twice a moment and not in thousand years?

The character M

What is as big as an elephant but does not have weight at all?
Elephant shadow

I have hundred of legs but cannot walk, I have a long neck but do not have a head, I am eyeless, but I am very neat and tidy. Who am l? 
Broom

I come from a mine and am a prisoner in wooden case from which I am ever released. I am used by many in my prison life. Who am I?
Pencil lead

RiddLes, RIDDLES

What did the big chimney say to the little chimney?
You´re too young to smoke.

What has a neck but can´t swallow?
A bottle.

What is always coming but never arrives?
Tomorrow.

What part of the army could a baby join?
The infantry.

What never asks questions but gets lots of answers?
A doorbell.