How long will cigars stay fresh in a plastic bag with a wet paper towel?

in my experience for about a week, then they will begin to dry out. Of course, if you add too much water it will give them a funk, so just a very damp cloth, and in general, you dont want them in direct contact with the wet paper towel, as it will make a portion more moist than the rest, which would result in an odd burn. I use a small humidor, but if I need to bring a cigar back from the brink of dry crackyness, I will use a paper towel over night.