One of the things I have always brought along is the end of toilet paper rolls I keep in a zip lock bag...or you can bring a package of diaper wipes. Yes, I remember being desperate in Mexico. Mazatlan I think.. at a flea market and the locals took me to a garage with a hole in the ground...I was desperate..!!! In Porta delardo there was an elderly lady in a bathroom with strips of toilet paper she was selling. I had my own.