@katmwall I’m sure you can use any small humidifier I bought this controller that actually turns the humidifier on and off depending on what you set it at so that it’s kinda automated. You Probably would need a dehumidifier also to make it fullly automated.
Inkbird Humidity Controller IHC200 Humidistat Mushroom Greenhouse Pre Wired Outlet Dual Stage Humidifier Dehumidifier(New Version) https://www.amazon.com/dp/B07XGQ7Q53/ref=cm_sw_r_cp_api_i_8mUwFbFCTH05Q
They also have one for temperatures so a heater/ac combo will make it automated