I really don't know that much about the conditions mites need to survive to be honest. It gets crazy dry here in the winter, and I just use one of those plug-in humidifiers. Fill it up and let it run at night. Bumps the humidity in the general area by like 10% (it's kind of a crappy one).

Can I ask what the inspiration for Obi the Obtuse was? Funny name lol.