Well you will get that its just rain particles caught at the right place and the right time...did I know that rain particles could take shape of
pentagons and hexagons? No I didn't but it seems to me that if snow flakes can have complex design why not rain drops?
In the 6th picture down there is a small helicopter hovering over the crop circle. If the floating things your referring to are in the 7th and 8th
photos I believe they are rain on the canopy of the same helicopter from the photos being taken inside. I think the other pics are also rain or
moisture, maybe on the lens of the camera - none of the people really seem that interested in them, so I dont think they see them. Just my thoughts!