There's a light panel, 900-lux drawing tablet, that I've set on my desk for a number of years. Recently, I confess I've started experimenting with some of the 10,000-lux light panels that sit on your desk. Those are very, very bright. And I do use that now if I wake up really early and I'm going to do some work. I'll turn that thing on, and it sure wakes you up.