Some years back this was standard for college kids in dorms. They would build a bed frame/desk, and make it where they could disassemble it to take home with them at the end of the semester and then reuse it next year.
[citation][nom]tokenz[/nom]Wow. I cant believe that is an article.[/citation]
Me either.
My computer chair/bed is a futon though. Much more convenient.
Bit of advice, pay attention to the ceiling type in your room before elevating the bed (and everything that goes on atop the bed)... "Smash Textured" ceilings with pointy spackle are as sharp as they look!