... or things that work at all? (eg humidifiers, at various price points, maybe 40% of which are even functional when first unboxed)
Boil water on a stove - boom, humidity increased!
1. Electronically (ex: you can do this in your bedroom directly, or anywhere you need the warm-mist)
2. With safety measures (its still dangerous, but they minimize the amount of boiling water to minimize the possible harm. Better than an entire pot of boiling water, but still half-a-cup of boiling water can severely burn you still)
3. Probably as cheap as the pot you were using to boil water anyway. Warm mist humidifiers are like $35.