I bought a brass fog head that attaches to a garden hose for $8. I looked around the internet to find a picture so this link should be a page of different misters. The one I use is the top one that has 3 holes in it.
https://www.mountainvalleygrow...
I wouldn't buy the one in this advertisement though. I got mine from the local nursery supply place and that had several heads made by the same people. If you want a super fine mist you want to find one that might put out 1/2 GPM or something like that. I think the ad has a 4 GPM head. That one sprays out well, but is not super fine. AM Leonard had a couple of sizes. you should be able to find one somewhere. I use mine for pepper plant seedlings and all kinds of really delicate plants. Also, if connected to a timer, it could be real good for a propagation system for cuttings.
Just did some extra checking. This should be the one you want for the super fine mist
http://www.groworganic.com/fog...