I actually just did some research on this a few days ago, and the most promising thing I found was this: http://re-timer.com/ http://re-timer.com/ I've been us

I actually just did some research on this a few days ago, and the most promising thing I found was this: http://re-timer.com/ http://re-timer.com/ I've been using a NatureBright SunTouch Plus for a couple years, and it's good, but not particularly convenient to sit in front of for half an hour a day. The glasses are expensive, but would be great if they work. (And most of the reviews I was able to find were positive.)