Most things that I want to keep organized get split into high-level folders.

    ~/Documents
        /personal
            /project-1
        /client
            /client-1
                /project-1
        /school
            /semester
                /class

Each of the high-level folders contains a folder called `_archive` where I move old clients or projects into, this way the organization-level folders only contain things I'm actively working on.

Then I have `~/Downloads` and `~/Desktop` which are both a bit messy and get purged (Downloads) or reorganized (Desktop) from time to time.