Laptop desks can cost a stupid amount of money, but luckily for you they can be constructed with IKEA stuff, sandpaper, and a saw.
IKEA hacker has laptop desks or holders created from a sawed-off stool, a paper towel holder (weird), and a kitchen shelf. We like the stool one, personally. It costs $19. The one he was copying cost $150. Win.
need a laptop desk? diy your own stand [IKEA hacker]
(Photo: IKEA hacker)