Touch-free paper towel dispensers.
It seems like every one I've ever tried to use either does not work, no matter how much I wave my hands over, under, and beside it, trying to find that elusive spot where it acknowledges my presence -- or it feeds out such a pitiful little piece of paper that I end up grabbing it and pulling to get more paper -- thus negating whatever benefits I was supposed to get from a touch-free paper towel dispenser.
Just give me that old-fashioned kind with the hand crank. It always worked just fine, and I never got anybody's germs.
At least I don't think I did.