Shelves
Bookshelves are a wonderful thing. Kate and I have been living without enough book space since we moved in together - all our shelves have been double-stacked. Finding anything is a pain, because it's impossible to tell if you still own the book you're looking for. No longer. One short visit to Ikea (plus delivery and assembly), and we have a huge 5x5 Expedit bookshelf dividing our living area. It has comfortably absorbed our entire collection (plus boxes) - we have double-stacked it, but can access both sides....