The answer to this question strongly depends on what do you want to humidify.
If you have only a few cakes, then perlite is probably the humidification of choice.
With casings, the moisture that escapes the casing might already be enough to humidify a small terrarium.
If you have a shelf like grow system, a cool mist humidifier might suit your needs.
To decide on what you want to use, please refer to the
Humidification Techniques section.
