Question: about "There's no running "todo" list with items that keep pushed back day after day" - but what if you have items that you don't manage to do, and they accumulate, example of such low priority items: pause car licence (nothing bad will happen if you don't), cancel some subscription, let's say you have many of those, where do you put them and how do you avoid this growing list? let's say every day I manage to do one such low priority item but I have two new to do etc.
Those kind of tasks would go in the online calendar, scheduled on some future date.
> The one outside tool I use is an online calendar, and I put everything on this calendar, even things that aren't actually for a fixed time like "make a coffee table at the workshop" or "figure out how to recruit new PhD students" — I'll schedule them on a date when I want to think about it. That way all my future plans and schedule are together, and not a bunch of lists I have to keep track of.