All my idle phone time is spent creating (and answering) anki flashcards. I usually have wikipedia or a textbook open on half the screen, and anki on the other

All my idle phone time is spent creating (and answering) anki flashcards. I usually have wikipedia or a textbook open on half the screen, and anki on the other half. Whenever I find something I want to remember, I make a flashcard for it. Not sure if it fits your definition of "creating" content, but it's one of the best ways I found to optimize idle time on my phone.