We can take it for granted that most of us here are smart-phone addicts (and I research mobile for a living so I'm worse than most) but something that interests me - where do you use a low-tech solution rather than a high-tech one?
Let me give an example - I went through to-do app after to-do app on various platforms and none of them stuck - so now I just have a big whiteboard which is spilt into sections that are graded one to five (one being the highest priority), then as jobs come up I just stick them on the board and move them up or down as needed - I find that much more productive than a to-do app, the visual aspect seems to work better.