For a limited time you can snag this Honeywell HUL520B Mistmate Cool Mist Humidifier, Black for only $19 (reg. $34.99!). This humidifier produces a visible cool mist, runs up to 20 hours per filling, auto shut off when empty, and a 2 year limited warranty.  Even better, shipping is free on orders over $49 or score FREE 2-day shipping with Amazon Prime.