The best mist sprayer I have found is one I bought at the beauty salon. They mist hair all the time. Wasn't too expensive either. It puts out mist, not drops. A sprayer to mist plants and vegetables sounds good too.
I also use the bottle from Best Press and fill it with Sta Flo: one part starch to five parts water. Works wonderfully. I also found out that my grocery store no longer carries Sta Flo. Walmart has it and maybe Target. Or you can get it online.