I wouldn't use a paper towel, if you are gentle it should be okay, but eventually a wood fiber is going to scratch the screen or something like that.
You can get a microfiber cloth, usually found at electronic stores, or places where you can buy musical instruments, and things like that, since the paper towel rule also applies to guitars, pianos, and other instruments that have nice shiny finishes that you do not want to scratch...
Oh also, an auto parts store may have them because people like to dry their cars off with that type of material....
I have one from my glasses and will use that with some water. It isn't super sticky, it is tough to get off so I don't know if sticky is the best description. I think my 5 year old daughter touched it with dirty hands.