dehumidifier

If you live in a relatively humid environment and don't mind dropping some cash to keep your camera gear safe from fungus and corrosion, you may want to take a look at getting an electronic dry cabinet. They look like wine coolers, except they're designed to protect your cameras and lenses from moisture, dirt, and dust.

Fungus is one of the banes of a camera lens' existence. In humid environments, nasty things can begin to happen if some fungus spore-laden dust particles make their way into your lens. To prevent fungus from growing inside a lens, photographers often silica gel packets to control the amount of moisture in and around their glass.