Getting organized with my Nokia 770

My concentration and memory have caused me a few troubles lately. And my time planning... I almost never am satisfied with it.m So I decided to use my Nokia and get a bit more organized. Here's what I installed:
GPE Calendar + Ermining to synchronize it with Google Calendar, which I extensively use.
GPE to-do list. Cool for tasks lists, with both categories and priorities. BUT: I have plenty of ideas that are not exactly tasks and putting them on a to-do list is no good idea, because it becomes very messy, and I keep on adding and removing the same tasks over and over as I postpone realising them. That's when MaemoPad Plus becomes handy: it works on SQLite and lets you build a tree, with nodes that can be sketches, text or lists. I use that for a kind of mind-mapping. (There is no real mind-mapping software for the ITs.) That's where things that are more ideas than tasks go, like making a headband with the fabric I used for my latest dress (when the sewing machine will be fixed) or that website with a Scottish pattern as a background (when I have time for that....).
Last but not least, Gnumeric Spreadsheets. Amazing tool! I don't use it to its fullests, it has a nice bit of arithmetics implemented (and add-ons, which I haven't even installed). I just use it to keep track of health-related stuff, like my physical activities (how many times have you been told to write them down to motivate you?)