I got an idea at the hospital awhile back when they were taking my oxygen saturation level. I was thinking, with the way the optical mouse is set up, why not put that optical on your index fingertip? The left click would be on your thumb, and the right click on your middle finger. The left and right click would be set up just a little more sensitive. Picture your hand resting open on your quadricep(lap), you just move your hand around and lightly press on your thumb or middle finger to left or right click, and you could place your hand anywhere comfortable.(and no perverted replies:lol )