I always carry a bandana and use it for everything under the sun.
Yeah, they have a million uses.
I remember when my daughters first husband was deploed to Iraq, we were visiting them at their apt. in Junction City, Kansas...he was stationed at Ft. Riley.
I went to Walmart and bought him a few snacks and things, including a couple of bandanas. His mother was with us (he was an only child and he was quite the mommas boy) and she asked me why I bought him the bandanas. I told her in case he had no tissue, he could use one to wipe his nose, or his ***. He could also wipe up blood or use one as an emergency tourniquet.
She damn near passed out!