I know it sounds a little crazy but I've got a N3DS, purchased as SM3DLand Bundle, which went straight from the box to a freezer bag. Well, first I removed the backplate while wearing vinyl gloves, so I could get the microSD out. But since then, it has been inside the freezer bag and my skin has barely touched it, if at all. I ran it through plailect's guide all while inside that freezer bag, and game adds through freeshop and FBI since. One day, when nothing else worthwhile will ever be released for 3DS again, I'll take it out of the freezer bag, and put it back in its box. And when/if the other, identical N3DS I currently use every day ever breaks, I'll get out the untouched one.