Nice site, hesperis. Donuel's 4th "lifeform" made me think of faeries too. I have seen a bunch of these flying around very fast in a rooughly spherical group. Definitely not just "floaters". They were tiny, though, about the size of grains of rice.I couldn't get Allan C.'s Moonbow clickie to work.
When I worked in a Reference Library about 20 years ago a woman told me about the Brocken Bow but I couldn't find anything for a couple of years and finally found a picture of a similar one in China.
I used to have site which showed a picture, but it is gone now.
http://www.gi.alaska.edu/ScienceForum/ASF7/779.html
Helen