Walmart has Sunbeam Warm Mist Humidifier for $9.88 (Reg 21.44) with free in-store pick up or on orders over $35.
Sunbeam Warm Mist Humidifier helps improve humidity levels room by room. This device is easy to operate and allows you to adjust the desired level of moisture. The aromatherapy humidifier comes with a tray for adding scents and medicated vapor to your air.