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 ass. He could also wipe up blood or use one as an emergency tourniquet.
She damn near passed out!