Need Some Sort Of Wall Bracket For My Laptop?

I Need somting like a laptop table to go on my wall.. so i can use the laptop while lying in my bed without it being on my lap, like you see how you get tv stand/brackets for on walls to put your telly on and it can be ajusted to your liking.. like that but for my laptop... any one know where i can get one from, or somthing like this... not to pricey tho,