Best short medium riddles

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 am covered in feathers or foam, yet I have no wings and cannot fly. I am the only place where you can lose and find your mind at the same time.

I am the place where the earth meets the sky and the water kisses the land. I disappear twice a day, only to return again. What am I?

I have a headboard but no brain, and a footboard but no toes. You visit me to travel to worlds that don't exist. 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?

A hundred feet in the air, but it's back is on the ground. What is it?

What did the rug say to the floor?

What is the ancient invention that allows people to see through walls?

What is more impressive than a talking dog?

If Fortune had a daughter, what would her name be?