I just grabbed one of these Crane Nursery Humidifiers for $17.99 + tax shipped. We currently have three coughing, hacking, snuffly kids and only one humidifier. Even the cheap, generic humidifiers usually cost more than this . . . and these cute humidifiers are normally $39.99!
This is a Target daily deal, so it ships for FREE. Use the code TGTHTT5Z at checkout to get an additional 10% off, as well.