I never thought this would be my first suggestion, but here goes....just for fun....
Light Day pads make great sweat bands inside your helmet. Really, I'm not kidding!
Just peel and stick...and they really soak up ALOT of sweat. They keep the sweat from running down into the top foam of your googles and into your eyes. Just make sure they are totally fragrance free....otherwise, you'll suffer from burning on your skin...and the perfume smell might attract varmits or guys with strange night habits....
Heavy Kotex Pads....the really big ones....are excellent for a first aid kit.
They work much better than any gauze out there...they are sealed from the factory, so they are reasonably sanitary for medical needs.....(like all the gravel or glass or whatever in your wound is any cleaner!)
You can really handle a large laceration with maxi-pads and they are easy to pack and carry.
Since they soak up water so well, you can also soak them in cold water for use as a pack on a burn or abrasion...or even as a cool pad on the forehead of a rider who has heat stroke or needs cooling down fast. Just dip the maxi-pad and squeeze it over the head, neck, upper body, etc....redip and continue...it works very well.
Finally....for environmental use.....they soak up oil spills or other engine fluid spills very well. Just drop them back in the baggie you carry them in and pack them out of the woods with you. You can use them to catch leaking gas tanks or other fluids also....anywhere you need to stop a leak.
Anybody got any other uses for these?