Leknesdirect via Amazon offers its Leknes LED Essential Oil Aroma Diffuser / Cool Mist Humidifier 2-Pack for $22.99. Coupon code "SD69XHOD" cuts that to $14.49. Plus, Prime members receive free shipping. That's a buck under our mention from two weeks ago, $9 off, and the lowest price we could find. It features seven LED colors with adjustable brightness. Deal ends February 28.