Most backpackers know the value of having a large 100% cotton bandana in their gear. A good bandana is one of the most versatile pieces of equipment that you can carry.
Just a few of their many uses are:
Hat
Neck Shade
Sweat Band
Wash Cloth
Cool Wet Compress
Sweat Rag
Warm Pot Holder
First Aid
Gripper
Hair Tie
Head Band
Face Cover
Basket
and now it is also a game