I have a Repti-fogger but for 1/3rd the price you could get a "Personal Ultra-sonic Humidifier" and a bit of hose to make your own.

Something like this:
http://www.homehardware.ca/en/rec/in...I3838809?Num=1

Price varies from as low as $10 (not one I'd trust to last) to around $30 for personal sized units.

Look at liquid capacity, build quality and how easy or difficult the model will be to modify to connect to a hose.