This weekend, we started addressing all of the stuff we'll need to pack up and move, in order to rent our place. We don't have a huge volume of house to collect stuff in, but we've met that challenge, it appears. The first item on the list was going through our collection of CDs and checking to make sure they were all ripped to mp3, then boxing them up. As a fraction of the bookshelves, they didn't seem so big, but they filled just under 6 cubic feet, tightly packed. The bookshelves are looking a little emptier now, but we haven't even started packing the books. We have at least 90 linear feet of books--I haven't counted how many shelves we have double-stacked.
It's a start.