I've finally got around to doing something about the humidity in my cheese fridge.
The fridge, or "cave" (that word never really feels quite right for this setup), is a small bar fridge run by an external thermostat.
The humidifier is a fairly simple device consisting of a long acrylic trough with a computer fan at one end. The trough is half filled with water and the fan blows air across the surface. It is controlled by a humidity controller bought through eBay.
The unit is designed to fit in the fridge door to save valuable cheese space. The controller sits on top of the fridge.
So far it all seems to work alright but the real test won't come until summer. If it doesn't keep up then I will look at installing some sort of wick to increase evaporation. I may also consider running a drain tube from the drip tray to the humidifier to recycle water and save having to empty the drip tray too often.