When You Just Need To Get The Dust Off
You've seen the "California Duster" in auto supply stores for years. These things are extremely popular with hot rodders and classic car collectors because they don't scratch paint while doing a great job removing dust and light dirt.
I have been using the Dash Duster (a smaller version of the original duster) for a couple of years now and it works great. The Dash Duster is small enough to carry in a saddlebag on those road trips when you want your bike to look good but don't have time for a wipe down with rag and spray polish. Dash Duster is also terrific for when your bike has been sitting in the garage a couple of days and just needs a quick wipe before you hit the road.
Dash Duster is under $10 at most any auto supply or online.