Review on 🌬️ OURRY Mini Personal Humidifier - Portable Ultrasonic Cool Mist Humidifier for Car, Bedroom, Plant with Adjustable Length, Container Diversity - Whisper Quiet, Travel USB Small Humidifiers for Office by Nick Beck

I find this donut humidifier perfect for traveling as it can be carried in your toiletry bag and shortened to fit a small mug/bottle. When it comes to cleaning, you will need to replace your wick filters every 1 or 2 months depending on the quality of your water, the contaminants the filter is absorbing and the amount of time you use it daily. If you are looking for a small humidifier without changing filters, this is not an option for you. Also, you can't add aromatherapy essential oils during use as it may block the atomizer and prevent it from fogging. This product comes with a one year warranty in case you have any problem with it as detailed in the user manual. 10 minutes per instruction. It comes with a USB cable that can be plugged into any power source such as a charger, laptop or cellphone adapter. It turns off automatically after about 8 hours of use, which is nice. If you need to turn it back on, just press the power button to continue working. In general, this would be great if you're traveling by car, staying somewhere that doesn't have easy access to a humidifier, and/or need respiratory support while you're out and about in your office.