Amazon has Drop Shape Ultrasonic Cool Mist Humidifier for $30.32. Free shipping on orders over $49. Crane Cool Mist Humidifier provides additional comfort to cold symptoms, dry itchy skin, and chapped lips. The whisper quiet humidifier operates on a low power consumption providing min. 10 hours of moisture from a removable water tank. Includes an automatic shut off safety feature when water tank is empty.