Well, I know that I would have a bright one for being seen, and one for not... <img src="/images/graemlins/smile.gif" alt="" />

If you want to be found, a bright bandanna can be worn, put out a window, tied to a tree - many different ways, including tearing it for tracer strips.

The earth toned one... all sorts of things. hair tie, broach, pteridactyl (bwahhh, bwahhh)

Sorry, too much T.V. in formative years.

Any cloth can be used for:
straining water/liquid
Filtering air for breathing
holding small items(from gathering in your area)
compress or turniquet(spelling, bad!) in emergency
map(like the silk ones for pilots)
Signaling

and other things...

Rena