Dust protection

There's some sort of spray used on carpets to cut down on static electricity, but I don't know how you would keep dust off using a spray. I've found that Pledge for furniture (ok on plastics even though it says it's for wood furniture) helps make it easier to dust because it provides a slicker surface to which dust does not cling as well. Dust is dust, though, and the Prius dash is a great collection surface.
I also use one of those cat tail like dusters with a 12in handle. Stows nicely next the the driver's seat by the door, out of the way, but handy for a quick dusting down on sunny days when the glare off the dust seems more annoying. So far, it all works well with little problem.
Bob