Small, decent humidifier
I need something that will bring humidity in a 4m x 4m up from around 30% to 60%. I'm not sure those ceramic things you fill with water and hang over the radiator would cut it. Would it? Otherwise I need something small, quiet and ideally mains powered and under 20. I'm not interested in paying more for features like light or diffusing aroma, I just need to raise the humidity as the heating is making it uncomfortably dry.