This great gadget works on so many levels. The water vapour it emits humidifies the room. Add a few essential oil drops to the tank and you have a great smell constantly wafting in the air. You can meditate watching the vapour shapes (volcano or fire). You can also switch the light off whilst it still emits the vapour so it's not distracting if you're using it at night to aid sleep (with a suitable oil). Great value.