This curvy PlusMinusZero humidifier by Naoto Fukasawa measures just 30cm in diameter and has round hole for the steam. It humidifies a standard size room working continuously for 8 hours in active mode and for up to 18 in standby. Comes with removable water tank with convenient foldable handle. You can also put few drops of your favorite aromatic oil and aroma will spread with the steam. Once the water is gone, the PlusMinusZero humidifier shuts automatically off. Available in pink, brown, beige, light blue, blue, white, green and orange for $318 USD plus shipping. PlusMinusZero.