I'm glad to see this topic still generates a lot of interest and plenty of great ideas. I started a new project and must now work with systems not connected to the internet in an environment that will not permit mobile phones in certain areas. I've switched back to a day timer planner with day/page inserts both for calendar items and to write down inbox items. I shifted all NA lists back to paper at first but now settled on a text document on the isolated system for @office items (since it's where I work and only contains items that can be done in this area) and paper lists for other contexts so I can take them with me when I leave work.
I second the FF comments and find that I spend more time reviewing both NAs and calendar items with one book in front of me in every meeting.