Dude there's a poltergeist called Peeves, Nearly Headless Nick can't get into the Headless Hunt by half an inch and Mr. Weasley hits Mr. Malfoy with a book
Dood I like Sci Fi.
There's a 2 book series called Inside Out and Outside In.
They're in a self-sustaining cube trying to escape to the Outside, where there is green grass and trees. There are the Lowers, who maintain the Cube, and Uppers, who are the posh people. One Lower girl travels through vents and meets an Upper.
We acktshually, if you read the book, you'd know that Harry considered getting and Aqua lung. But then he realized that A) he didn't know how to operate one and B) He couldn't get one, and if he accio'd it, that would be thievery and a breach of the international statute of secrecy.
There's a 2 book series called Inside Out and Outside In.
They're in a self-sustaining cube trying to escape to the Outside, where there is green grass and trees. There are the Lowers, who maintain the Cube, and Uppers, who are the posh people. One Lower girl travels through vents and meets an Upper.