What about a pacifier clip? Helps prevent it from falling to the floor as often. I have had one baby who was a pacifier baby, and we use a clip, and I carry some clean extras, just in case.
In general, I am not a fan of over sanitizing. Kids need to be exposed to some germs. Washing with soap and water is our best bet here, and in a pinch I would use a wipe. Do you really sanitize your hands every time you touch your kids? Not meaning to offend, just curious.