Here's another weird one I had once:

I lived on another (nameless) planet, which was a lot like Earth, but it was tiny, like the one from A Little Prince. If you've never read that book, let's just say it was so small that it could be crushed by a huge baobab tree, and one could walk all around the world in about 30 minutes. In my dream, I lived in a tiny cottage with my parents (not my ones from real life, but total strangers who happened to be my parents in my dream) and my brother (same story - my real brother is named Will, but this one was named Noah). I guess it must have been the future, because I had always been told that my parents had been astronauts who came from Earth with my brother and I - we were twins, and had been babies when we left Earth - , but when they got to this planet, they couldn't go home for some reason. They were stuck in the strange world, and so were we. Anyway, one day, we were 10 (my age) we decided to ask my 7-year-olde friend and Noah's 12-year-olde friend to go to the swimming pool with us. They agreed to come, and we were having fun and swimming around when, suddenly, I fell through a hole and was in a violet tunnel similar to the one in the movie Coraline (I know there's a book too, but it doesn't have the tunnel). I looked down and saw Earth on the other side - I was about to get there! But I then felt a tug (is something wrong with the italics key?) and came back up. Noah had pulled me by the leg and held on to me.
"This pool," I said. "holds a tunnel to Earth! I'm serious, I almost got there!
I don't remember what happened next, but we ended up bringing the entire planet to Earth...
That's about all I can recall. Oh well.

Here's a nightmare I had a year ago:

I was a nine-year-olde girl living sometime in the future. The world had shrunk (literally) to about the size of the planet in my previous dream. There wasn't much room for plants and trees, so the atmosphere had shrunk and most of the world's population had died. There were only 13 people left, all girls. I was one of the 13.I was different from everyone else. They were all cunning and selfish and evil.They decided to try to build a house covering the whole world. I kept telling them not to do this, there were then only a few apple trees left, and a few rabbits, deer, and birds. They would have to cut down more trees to build the house, and it would get even harder to breathe. Plus, we would probably starve. I ddidn't want us to die. However, I was the only person against this idea, so the girls built a huge red and purple mansion. I couldn't stop them, because I figured if I did they wouldn't hesitate to murder me. They all hated me anyway. Except... there was one girl who didn't really treat me like scum. She was nice to me when the others weren't looking, and I thought I might've been able to convince her if the evil girls didn't rule the world and use blackmail. I know she didn't really want to build Earth's Armour (that's what they called the mansion), but but she didn't care enough to take actual risks. Meanwhile, we could barely breathe, and I kept trying to plant apple seeds, but then the evil girls made a law against it. I then woke up.