We need to force into oscillation a small card (50 gr) hanging from a wire. After evaluating all acceptable means (for us) we found that blowing a tiny jet of air from time to time will do. Without resorting to microblowers, we DO know they exist, (expensive and hard to get locallly), would you suggest something else to obtain a gentle air blow lasting for less than one second every time is needed? Please note we are not looking for other solutions; just to generate a gentle, very quiet, air blow. Mechanical noise is a no no and air volume required is definitely SMALL.