Housmile via Amazon offers the Housmile 20-oz. Essential Oil Diffuser Ultrasonic Cool Mist Humidifier in Brown for $32.99. Coupon code "KOBEAABB" cuts it to $23.75. With free shipping, that's the lowest price we could find by $15, although we saw it for $4 less a month ago. It works as an aromatherapy diffuser, humidifier, and night light. Deal ends December 31.