I got an idea yesterday about having a journal-like program where I could do the following:
Create a journal for a particular project. Then I would write my thoughts about my project and also put time spent as well. This way I can account for the time I have used and get a bit more attached.
The journal would work in similar ways that you are talking about OneNote. I have tried OneNote and I like it, I just do not really like being tied to a vendor due to potential future pain (IŽll avoid preacing about software).
I am a bit determined to make it myself. I got the skills and it will really give me an interesting case to wrap my brain around. That will also give me the option to customize my workflow specifically to my needs and change it as I go. And that I really like databases.
Perfection is continuous improvement of life quality.