I have a mostly paper-based system, which works well for me.
I have a clipboard with three pieces of paper on it: Next Actions @Home (on top), Projects, and Waiting For. I have three more lists, Next Actions @Laptop, Waiting For, and Someday/Maybe, which I keep as digital text files on my laptop, but could just as easily be paper.
My Ubiquitous Capture Tool is a deck of 3x5" index cards that I keep in a pocket, along with a nice pen. (I used to use an artist's pencil, but they break too easily when I sit down, and they need to be sharpened.)
I also have a paper inbox and a paper tickler using the standard 43 folders.
Does that help?