If you lived on the Hawaiian islands you would use coconut shells and if you lived on the coastal areas you would use Mussel shells. But in some regions people use there hand, particlualry their left hand, they think that this is why we shake hands with our right hand cause our left was dirty. Some people in the world still use the hand method of wiping such as in areas like India and the Arab world. Islamic tradition says that you should wipe with stones of earth, rinse with water, and finally dry with linen cloth so many people carry around little sacks of earth and water for this reason. In ancient Rome, all public toilets had a sponge attached to the end of a stick which soaked in a bucket of salty water. The first people over from england to America used corn cobs to clean the gap.
http://www.xanga.com/home.asp?user=Brad_F