How to make a cool bed?

Okay atm i sleep on a futon, and it's pretty comfy, but... It squeaks a LOT! And I can't take it any more. So I want to make myself a bed, something cool and unique that isn't like a boring normal bed, but comfy and not too small, but not big bc I have a small room. Something that doesn't take up much room is nice, please please! Help me out :)