Photograph courtesy: http://pre00.deviantart.net
There are two kinds of clutter: Active clutter and passive clutter.
You probably have quite a lot of passive clutter in your home and you would like to do away with it. In the beginning, it was just a collection of different things that you were using. This is active clutter. They became passive clutter the very moment that you no longer needed them and forgot to put them away. That is how a pile of items actually turns into clutter.