I have used atomozing nozzles, like for a greenhouse or supermarket produce system, hooked up to a solenoid valve that was on a timer. It worked great.
Another old post brought back to life - apologies if this specific thing has been covered; I'm getting close to setting up my reefer cave (not ideal, but a free reefer-freezer, very new, so couldn't pass it up) and wondered, too, about this idea of cycling on and off, but using a small US humidifier as opposed to an atomizing nozzle - the solenoid I no longer have (used to use one to dose in CO2 for a pretty-high end planted aquarium environment), so I was thinking of a small US humidifier and a simple timer set to X minutes on, Y minutes off, checking average humidity level over time before putting my first cheeses into the cave.
Not an electrician, and not naturally, mechanically (only a scientific brewer by need, not natural inclination, beyond a fairly intense, native curiosity) inclined - so, any reason this would lead to humidifier burnout?