How can I create humidity in my Ball Python terranium tank?

I wanted to know how I create a moist atmosphere in my snake's tank. My snake tank is in my living room on the table next to my couches and my dad keeps the fan on at all times because he get's hot but, it's not facing my snake tank thankfully. Plus we live in the desert which is Nevada. So what materials do I need to create humidity?

?2014-07-07T19:49:10Z

Eco Earth Coconut Fiber Substrate and line the tank with moss. The coconut substrate will absorb and keep the water better then any other substrate and the water will cling to the moss.
You can also keep a water bottle of room temp filtered, (not tap) water and spritz the tank daily.
Do you have a humidity sensor? If not you should get one to help maintain the levels.

Kaleb2014-07-07T20:02:04Z

Spray daily twice a day with a water bottle OR you can get a humidifier at walgreens and put it on a timer with a hose that leads into the tank for around five minutes twice a day