I use all 3. I have a piece of unwaxed dental floss on my limb tip, it gives me a general idea of the wind. I use talcum powder (NOT corn starch) to get an idea of what the wind is doing with a little more detail....it reacts to thermals, up drafts, etc. better than dental floss. I use the milkweed pods (my pockest are full of them) to watch what the wind is doing farther away from me.
To the poster wondering why you would check your wind in a stand...if the wind changes or becomes unfavorable in my stand, I MOVE.