What Am I Riddles

Question: A container that takes no keys,
but a golden delight lies within me.

What am I?

Question: Without fingers, I point,
without arms, I strike,
without feet, I run.

What am I?

Question: A mirror for the famous, but informative to all.
I'll show you the world, but it may be a bit small.

What I am?

Question: I'm in everybody but everybody still wants me.
I won't feed you but I'll feed the tree.

What am I?

Question: You wear me every day but you never put me on.
I will change colors if you leave me out too long.

What am I?