If anybody is on good terms with a doctor ask them for a countdown timer. Most doctors offices have more than they can use. Why?? Because that is one of those freebies that pharmacutical reps give away to the doctors (one reason why health care costs are so high these days. But don't even get me started on that topic!!!). A lot of doctors clip them outside of the exam room with a countdown timer anywhere from 6-10 minutes so they know when they need to be done with their patient. They usually have extras laying around.

Ken