To make a wind detector, take an empty nasal spray bottle and remove the spray tip and any tubes. You might have to enlarge the hole in the spray tip using a large pin or paper clip. Make sure the inside is completely dry and then fill it with powdered chalk, which can be purchased at any home improvement store. Put the spray tip back on and you’re done.
When out in the woods, simply uncap the bottle and squeeze it to blow a puff of chalk through the spray tip. The chalk is odor-free and carries well in the breeze. I prefer this type of wind indicator because it shows me the air currents over a larger area. Orange colored chalk works well for higher visibility.