Everyone takes out time to clean up some stuff around them. Re-organize things. Like your desk, cupboard, etc. At times, it happens often, or once in a blue moon. But, it gives you a sense of satisfaction that you are able to organize your life and put things around you the way you want it to be.
When I was less than 10, I used to clean up ( rather re-organize ) my comics collection once a while.
Then after 10, I started cleaning my study table. This used to happen often, with my table littered with books all around and stacks piling up within a week.
Then I got to cleaning my cupboard, giving out old clothes to the needy.
During college, cleaning of my books and project stuff used to happen after every semester. To be frank, that was one of the best pleasures, to put those course materials away hoping to never see them again ;-)
And today, I cleaned my Home Desktop... Phew !