Well I just do it by putting the laptop on my chest and using an external keyboard that also contains one of those touchpad mice like laptops have. Works like a charm and costs way less time / effort. The chest gets a little sore if you use it for too long or too many days in a row, so lately I've been thinking maybe I need to elevate the laptop off my chest a little with a C-shaped table of sorts that the laptop can sit on can sit it on. I get into flow so easily working in such a setup, and wish I could do it more often. I'm considering investing more in my work from bed setup.
