Fun Stuff To Do Late At Night?

Does anyone have any fun things to do about now. Like, hypnotising someone, or really short scary stories, or pranks to play on someone while they are sleeping. Something not horribly mean. There are some of my friends here, and we're having like a kind of childish sleepover. Any scary short stories, a way to hypnotise someone, or a really funny prank to play on someone, maybe while they are sleeping. Any other ideas such as this. Thxs