Photos: Gadgets to fight germs, fat, and frizz

OTT-Light fluorescent technology is designed to mimic frequencies of natural daylight, which studies show can help to fight wintertime blues. The company will sell for the first time individual screw-in bulbs later this year for between $8 and $9.

It also sells a variety of floor and desk lamp designs in big stores, but has stopped making the giant light boxes beloved by scores of desk-bound depression sufferers. However, Wavemaker's Fauna Sauna could fill the gap--at least for a sad Spot or Mitten.