Laptop desk from Camera Tripod. Works along side your bed, chair , whatever.
First, I found a nut that fits the camera tripod base. Then counter sunk, drilled into the other side of a piece of scrap so that it wouldn't pull through and had enough that the tripod screw could bite into it from bottom. I made the wood base smaller than the laptop to help in the cooling underneath. Carefully tighten the tripod base to the wood (hand tighten)
On the top of the base (Laptop side) I glued some old rubber sheeting to cover the base and give a non slip base for the laptop. Then used straight edge and exacto knife to trim the rubber away.
Next, I found a old strap to something long forgotten. Strapped the laptop down to the base. Careful to keep mouse ports, dvd access bay clear.
The tripod tilt adjust works to adjust the laptop to tilt up and down angles. If you hand tightened the base to the tripod, you can also swing (carefully) the laptop from side to side to various offset angles.
The tripod legs can be extended or lowered to any size situation.
Happy computing and keep on Instructables!!