I use a BOOX Note Air as an infinite supply of paper. In that I create general and specific "notepads" (using the BOOX built-in app). Those are basically just filled with sketches and lists.

Lists of projects I'm thinking about doing. Lists of things to do on the current project. Lists of bugs on a project.

Just scratch things off as I'm done. I like this method because I often want to draw a little sketch of something (like a UI element or quick flow chart) inside the list to remind myself of some aspect of the project/bug/etc. The freeform nature of pen + paper helps me remember things, having gone through a physical action of writing. I also find it much easier to go back to another project to look up something, because I remember doing it. I remember drawing something. I know, visually, what I'm looking for and every notepad I ever made is right there, immediately browsable.

"Works for me," as they say.