I have a notebook where I write all of the items I get incorrect from my reviews within the day. Sometimes I’m not able to write all of them down cause it could be more than 10 items but I usually write down at least 5 items a day. The Stroke Order script has been super useful for me when I do this, so I don’t need to look up the stroke order from a separate app. But note that it only for the kanji items (not the radicals or vocab).
Additionally, I usually rewrite the grammar points and new vocab for every lesson I finish on Minna no Nihongo with my italki teacher. I think it helps to retain the knowledge and because I don’t have the physical MnH books, I can refer to my notes without going through the chunky PDF file I have on my computer.