Asakuki 300ML Premium Quiet 5-in-1 Humidifier The Asakuki 300ML Premium Quiet 5-in-1 Humidifier ($29) acts as both an air purifier and a diffuser, which is so much better. It's not very large or assuming on your desk, and will help you breathe easier. Image Source: amazon.com Asakuki 300ML Premium Quiet 5-in-1 Humidifier $29 from amazon.com Buy Now