Mind Games

Here are some teasers that will exercise your mind. See if you can figure them out. I will post the answers later. And if anyone else has any mind teasers, post them here. This is another game thread. Hopefully, it's not a duplicate. Here we go:

1) We are little creatures;
all of us have different features.
One of us in glass is set;
one of us you'll find in jet.
Another you may see in tin,
and the fourth is boxed within .
If the fifth you should pursue,
it can never fly from you.
What are we?

2) Around the mill, there is a walk,
After the walk, there is a key.
What Am I?

3) Often talked of, never seen,
Ever coming, never been,
Daily looked for, never here,
Still approaching, coming near.
Thousands for it's visit wait
But alas for their fate,
Tho' they expect me to appear,
They will never find me here.
What Am I?

4) I am a country. My 1st, 2nd, and 7th letters form an
external point. My 3rd, 4th, 5th, and 7th is what you
will be when you solve this puzzle. My 5th, 2nd, 3rd,
1st, and 4th is in heaven. My 4th, 5th, 6th, and 7th
is on earth. What country am I?

5) I have an eye, but can not see.
You can not run or hide from me.
I come from above, from the clouds,
and am a danger to anything around me.
I am not made by humans.
What am I?

Here are a few to wrack your brain. This is just a start. I'll be back later with more and the answers to these. Oh, here's an extra one:

Y Y U R Y Y U B I C U R Y Y 4 M E

What does that translate into?