I am an organizer -- at least on my computer.
I used to have folders separated by store, but designers move around a lot and it got hard to keep track. I started to keep my files separated by Designer, and within that folder by kit. I don't like to separate my elements/papers either. Since I like to scrap with mostly one kit,this method works pretty well for me.
I also keep my CU goodies and my Collab Kits separate.
I dont like to purge anything, so that is really hard for me to do with my digi-supplies. I tend to save my photos and digi-stash to DVD several times a year, and when I do that, I clean out space for my computer's hard drive. I still have the hard copy to go back to, so it isn't really tossing out the files.
My husband just got some time of blue ray burner for work, so if we can use that, my dozens of DVDs will be on just a few blue rays -- and we'll make a second copy of all our photos to store in another location. Some day I will get around to going through the photos and purging, but the thought just makes me tired.