Haha, old thread but I remember this.
April, I'm laughing because we somehow had accumulated a ton of pillows too. Set for guest room, sets for two futons that used to get used for guests with children, etc. And then my mom passed away and for some reason I brought home the pillows from her house... I ended up getting rid of a bunch a couple of years ago, donating them to the animal shelter for bedding.
This past winter I found our old space bags and used them for holding the bedding that came with our Airstream that we bought last summer (we replaced it with some that was more to our taste, but want to keep the original so that someday when we sell the camper the original bedding, TV, etc. will be included even though we removed them). Well, it's working OK, even though the bags have definitely not stayed as flat as they should. But for this particular usage, I'm not too annoyed -- they do the job well enough!