My best Christmas, when I was in 8th grade, was getting Earthbound. I have a pretty awesome story for it, as well -- I had rented the game about a month and a half prior and had gotten fairly far (so it seemed for me), I believe in the middle of Fourside. Now, because it was a rental, I certainly couldn't retain my save, so I used this weird SNES device called the GameSaver Plus. Basically, it was a Save State machine that let you hit Start and R to save, and Start and L to reload, if I remember correctly.
Anyway, I wasn't about to go a month and a half without using my Super Nintendo, so I figured out that because the GameSaver was powered by the SNES AC, then led it's OWN AC into the SNES as a passthrough, if I simply kept the GameSaver plugged in but left it OUT of the SNES cartridge slot, it would still function as a saving device. So, I kept it plugged in through the power source but was able to still play my SNES until Christmas, and when I ended up getting the game, I immediately ran up to my room, plugged the unit into the slot, threw in my Earthbound and re-loaded the game, right where I was early November. I ran to a phone, saved the game, and everything was fine.
Though, if there had been a power outage or surge or anything of the sort, that would've been the END of my file. Now, that wouldn't be a big deal, but mid 90's young Sack would've been a MESS.
Either way, happy ending, and I still have all my EB stuff around, used, loved, and working.