What health 'gadgets' do you use?

We have a sharper image Air Filter as we live near LA and near a freeway (as in a good lean out my window throw and rock and hit a car on the freeway). It helps with my allergies as it filters out cat hair, pollen and road gunk (black stuff that clings to the filtering blades). It makes my apartment smell better. We absolutely love it. It was money well spent. I also have a water purifying pitcher for drinking water. I also have a pair of those craft gloves that is supposed to help with repetition injuries like carpel tunnel syndrome which I am getting from overusing my computer and from cross stitching. They are great support for my hands and keeps them warm too. They are great.