I've taken multitasking to a new level and built a Treadmill Desk!! Take a used or new treadmill with straight arms (important), velcro down a small shelf, add your laptop (and in my case, an extended keyboard) - and start walking! I can easily walk and type at about 1 MPH. It's very slow - but after a morning at work, I'm totally guilt free if I don't find time to work out. A work-at-home luxury that I hope will inspire some of you -- walk on!