I made one from parts from the Home Depot...
1.> Digital Lawn Sprinkler Timer.
2.> 5 Gallon Pump Garden Sprayer (white jug with a wand)
3.> B.A.R.R.S. Misting Nozels.
Zoe, i will post a thread with detailed how to in the HOWTO section tonight or tommorow if you want... Im not at home now, but the thing works AMAZING!