Winter months in Boston are brutally dry. That being said, as a college student, I am way too lazy too fill up an enormous humidifier every night. Air-O-Swiss has created a tiny water bottle humidifier that I can turn on at night and keep right next to my bed so that I don’t wake up in the morning feeling sicker than I did the day before. It takes no time at all to refill every evening, it takes up almost no space, and it works amazingly well.