I just found a decent wind indicator by accident. I did my scent free laundry thing, and threw some clothes in a big zip lock bag. The scent free dryer sheet I used flew out of the bag when I went to put my shirt on. After using, the sheet is basically nothing but fibers that are easily separated. For grins, I pulled a little bit off of the edge and let it go, it followed every little air current. I kept the sheet in my pocket and when I wanted to check the wind, I'd pull a few fibers off the end and it works like a charm.