Here is an essential oil diffuser that you can control with Alexa and Google Assistant. The Atomi Smart Diffuser & Humidifier has an elegant dark wood grain look and can be controlled with your iOS or Android device. It can deliver up to 12 hours of aromatherapy.
This mist humidifier can also moisturize the air with an output of 30ml/hour. You can use your smartphone to put this one a schedule.