If you've ever futilely tried to explain to a three-year-old that "just one more minute" elapsed ten minutes ago, and no, really, you have to leave for preschool now, the Time Timer might sound pretty appealing.
What's the advantage of the Time Timer over, say, an ordinary kitchen timer? Well, according to the manufacturer, "this teacher-tested aid reinforces the sense of elapsed time with a graphic depiction of the time remaining." Does your egg timer do that? More