I've never been one to hang on to possessions (comfortable worn-in shoes or jeans, being the sole exceptions). But now, I find myself obsessively storing broken down LEGO set boxes.
Not because I expect them to be repacked with sets -- although if they were to continually fill with LEGO bricks each night like a magic purse, I would be fine with that development -- but because I can't bring myself to put them in the recycling bin.
I will occasionally look at the boxes, but on the whole they just stand silent and stacked on the floor and shelves of my office. At some point, I'll imagine guests will be weaving through piles -- like old and yellowing newspapers -- as I call to them Marco Polo-style from my office chair.
I had a friend who once ringed his room with empty Snapple bottles and when I asked him why. He simply said, "I like Snapple." He also explained how it's harder to throw away the empties once you've started to collect them. But is it two or 20 the moment when your collection starts? Either way, at this point I've become a collector of boxes.