I'll second this, i bring multiple in with me every day...I'll go ahead and list how multi use a bandanna really is.... * worn as head band ** keeps sweat out of your eyes ** keeps hair out of your face if you have long hair ** wet that sweet cloth and keep the coolness(best...feeling...ever when you are sweating balls) * as face mask ** keeps dust out of nose/mouth ** wet that sweet cloth and breath humidified air, also keeps your face cool ** can rub some vaporub on it around the nose area and breath sweet goods as well. * around your neck ** safe place to keep it when not over your nose/mouth... ** not sure what this will do for you other than looking like a fabulous cowboy? but it still works, so go for it. * miscellaneous ** there are some sick designs out there, you trully can express yourself with them, and don't just have to rock plain colors(though you can rock those too if you want too, you do you!) ** lay it on the ground to keep your pants clean ** lay it on the ground to keep your SO's pants/bottom clean ** just using to wipe yourself off from time to time(sticky hands, runny nose) ** if there is cement/hard ground, you can wrap it around your knee to protect it while kneeing (that was random, but, it works) ** wave it in the air, like you just down care! ** smother one with vaporrub, and keep it in a zip lock bag. you can use it to wipe your chest later in the day, as they wont allow you to take a container of vaporrub in alone, but wont say anything about a piece of cloth.

Side note, besides just normal bandannas, the seamless bandanna masks sold on http://www.iheartraves.com/rave-accessories/unisex/bandanas?p=1 are fantastic...work like a freakin' charm.

bold TL;DR: this is what happens when you are up late and kind delusional