At the moment we have files for our bills and bank statements and stuff. We keep these in the black hole cupboard under the stairs. But the faff involved in getting everything out, locating the files, filing them and putting them away means that we just pile them up next to the sofa.
Where do you put DVDs and games? We have a pile of DVDs and Wii games next to the telly table. I stack them all up vaguely neatly and 5 mins later DS will throw them on the floor.
Books, where do you put those? Ours are piled up next to the sofa. Mostly cookery books and the like (there's no room in the kitchen for these).
We have one bookcase, but it's currently my Open University bookcase and full to bursting (yes, with clutter)
I also have an IKEA sack thing of crap waiting to be shredded. Thinking of setting fire to it as shredding it is going to take me all 2012.