I rub them down lightly with sesame oil, before I wrap them in Saran Wrap. I then put them in a large Square tupperware container and cover them with a lightly dampened paper towel or tea towel & seal. I also prefer rolling them on a damp tea towel, as it tends to stick less and it's easier to peel apart, verses getting stuck to a nice smooth plate! I generally don't like to leave them uneaten for more than 48 hours maximum, depending what's in them, but preferably I prefer sticking to the 4 to 12 hour, up to no more than a 24 hour period of time before eating. I definitely like to chill them and let them set a little bit, rather than eating them as soon as I roll them. Should they get too dry, I just wash my hands well and massage them with a light stream of water over the sink and then towel them off and serve. I always cut them in half diagonally with a WET knife, to avoid ripping the wrappers.