Annual topics
After writing for years daily I have noticed there are certain occasions when I write about the same topic every year. I could probably create a calendar for those dates and just check from there if there is something I should I write about on any particular day.
Today it would say "write about midsummer" as that is what today is. Other occasions would be things like Christmas, new year or my birthday. Well, those are already on the calendar, so I don't need to do anything about that.