Sunvalley Brands via Amazon offers the TaoTronics 2-Liter Cool Mist Ultrasonic Humidifier for $31.99. Coupon code "TAHY9DLN" cuts that to $24.99. With free shipping, that's $3 under our November mention, $13 off list, and the lowest price we could find. It features noiseless, 24-hour operation and a 360° mist nozzle. Deal ends March 31.