One way to get "light therapy" in the winter besides the expensive LED gadgets is to just go outside when the sun is out as I did this afternoon. Personally I don't buy much into the wives-tale that the cold makes you "catcha-cold" or "catcha-pneumonia" as long as one dresses appropriately. There are probably more health benefits to just putting on a winter coat and taking in the free Vitamin D. Also on cold, crisp Winter days the air tends to be more clear making it better for taking photos:
Northeast Pennsylvania, January 15, 2012 (LJ)