What word begins and ends with an E, but has only one letter?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

I am the fastest animal but cannot climb the tree. What am I?

What is more useful when it is broken?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?