I’m tall when I’m young, and I’m short when I’m old. What am I?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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?

If your uncle’s sister is not your aunt, what relation is she to you?

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 ?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

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

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?