This COSSCCI Aromatherapy Essential Oil Diffuser is extremely nice. It is elegant, yet simple, easy to operate, and works well. This diffuser is digital-touch operated, no buttons or switches. It has a timer which you can chose it to run for 60 minutes, 120 minutes, or 180 minutes. The timer is also optional, you can just have the diffuser on continuously running. It will shut off automatically if there is no water left in the tank. This diffuser also functions as a cool-mist humidifier if you choose to run it without essential oils. It would be perfect for an office, bedroom, or babies room. This unit doesn't have lights despite what the description says. This is a basic unit. The only lights that it has are the indicator lights that the unit is on or set to a specific run time.
Check it out here: https://www.amazon.com/gp/product/B073H7338D/ref=od_aui_detailpages00?ie=UTF8&psc=1