Douhe USA via Amazon offers its Douhe Aromatherapy Essential Oil Diffuser for $19.99. Coupon code "JA6QXEQC" cuts it to $9.99. Plus, Prime members receive free shipping. Features include:
  • 200mL capacity, which covers 200 sq. ft.
  • cool mist electric ultrasonic humidifier
  • adjustable timer and auto-off function