Short hard what am I riddles for teens

I am a giant sandbox built by nature. I have a coat of gold and a hem of blue, and I am the favorite place for a holiday view. What am I?

I have billions of tiny stones but no mountains. I have waves but no hair. People lie on me to feel the warmth of the sun. What am I?

I am full of holes but I can still hold water. What am I?

I'm in your phone. Sometimes I laugh. Sometimes I cry. I even flip you off from time to time. What am I ?

What do you throw out when you want to use it, but take in when you don't want to use it?

As small as your thumb, I am light in the air. You may hear me before you see me, but trust that I'm there. What am I?

I am a vehicle. I spell the same when you read me forwards as well as backwards. What Am I?

You will throw me away when you want to use me. You will take me in when you don’t want to use me. What am I?

Armored but not a knight, snapping but not a twig, and always at home, even on the move. What am I?

You can easily touch me, but not see me. You can throw me out, but not away. What am I?