I have a second webcam pointed straight down at my desk, and scribble with a pen on paper. Frankly, this works better than any of the digital tools I tried, de

I have a second webcam pointed straight down at my desk, and scribble with a pen on paper. Frankly, this works better than any of the digital tools I tried, despite not being collaborative. (I tried a number of them, and have both a drawing tablet and a tablet pc)