Not sure about a humidifier/mister but locally some pet stores carry a misting system by Exo-Terra named the Monsoon. You will find a few reviews about it her on the forums. Price is about 100 USD here in the U.S.

The 1st Monsoon systems had their issues but I hear that is resolved now in the new versions.

Another system commonly found here is a fogging system and many people use this. The Habba Mist Fogger, average price is 60 USD, is a self contained unit and it is highly suggested to use distilled water in these systems so they don't clog up and begin to fail.

I'm sure there are many YouTube videos that will show both units in use.