The safest, most natural method for aromatherapy uses high-frequency sound waves instead of heat to disperse the healing fragrances of essential oils throughout your home. There’s no danger of fire, no damage to the aromatic compounds, and operation is completely inaudible to the human ear. This is a vaporiser you can feel comfortable leaving in the nursery, and it even has an adjustable night light for when you come back. It’s powered via a USB port (adaptor included) and will run for three hours before switching off automatically. For aromatherapy use, add up to six drops of baby-friendly essential oil after filling the reservoir with water; use water alone to humidify and cleanse the air in the room.