just go with an Ultra-sonic humidifer. $20-$30 at Walgreens (or any pharmacy) and about $10 in equipment. It is fun watching the fogger turn on too.
If you turn it on for about 3x per day and about 10 minutes per 20g's each time then it will suffice just as well as a misting unit. You can hide this behind the stand, unlike what my pictures show. Was a temporary setup.
edit>> forgot to add. I used to have a Habba-mister too and was very disppointed in it. It is good for air-exchange though if you have a tightly closed vivarium. I did enjoy that part as I was more confident about the small holes in the top sufficing.
here is some pictures of mine:
