My room is usually a mess, with papers all over my desk. I scribble alot when working out ideas and so on. The papers are somewhat cluttered over the desk, but I always seem to find them whenever I need them. I do keep my bookshelf organised tho. I need to know I can pick any book from the shelf without having to look for it. Also I may need to kick a pile of clothes out of the way when entering and move some appliances from my desk when working.
My computer isnt such a mess. I hate large unsorted folders because its harder, and pointless, to remember all the exact filenames. Especially my download folder with papers, ebooks and random files needs cleaning every so often. I didn't name those files so I can't really sort through them.
Anyways , I just cleaned my desk a bit and put up a whiteboard to scribble on. Maybe that will help a bit, but I hope I don't miss the ability to look through previous scribbles....