I use two paper notebooks per project: one for planning/architecture/schematics which is used for more long form writing. Second notebook is for todo items (li

I use two paper notebooks per project: one for planning/architecture/schematics which is used for more long form writing. Second notebook is for todo items (like add name validation for model Item). When I finish something I cross it out. I usually scan past two or three pages, so many things are left in void. Thats actually a good thing, if something is important I just write it again on fresh page + I occasionally go through wider history to check if something important was not left behind. + I keep Notes app open all the times with note per project. Here I keep list similar to the Todo notebook but it contains things that have to be done. Once I am done with task I delete the line. Basically paper notebooks are for development of fresh features and Notes is for bugs and fixes of production code.