Leknesdirect via Amazon offers its Leknes LED Essential Oil Aroma Diffuser / Cool Mist Humidifier 2-Pack for $22.99. Coupon code "CFNQV9D2" cuts that to $14.99. Plus, Prime members receive free shipping. That's $8 off and the lowest price we could find. It features a seven LED colors with adjustable brightness. Deal ends January 31.