I use google docs. I have a bunch of google documents i regularly use for work

- one where I keep track of my work: it's half a todo list with bullet points, half notes about my progress for meetings - one where i write ideas, things I want to dig into later

I write in them from bottom to top (so that my last entry is always on top). I basically use them as paper notebooks.

Actually if it wasn't for URL copy pasting, I think i'd use paper and pen.