Just about any female has a ready-made "duster" - it is a
baby powder bottle.  These plastic bottles have a 1/4-turn
top that twists to reveal a pattern of small holes in the cap.

I tried a number of different approaches, and the baby-powder
bottle beat them all.

No assembly required.  Just squeeze sharply to "poof".
Yes, it is just that easy!

(Wife/girlfriend not included.)

        jim