I shave every day, but my beard stays the same. What am I?

You see me once in June, twice in November, and not at all in May. What am I?

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

What am I?

A father's child, a mother's child, yet no one's son.

Who am I?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

No matter how little or how much you use me, you change me every month. What am I?