ooh yeah! One I keep coming back to as well is using em for indexing quotes from books. You take a photo of the quote with the card in frame, and it creates a new card with the quote picture linked to the book card.
@jrdprr @Mappletons @hyperlink_a Follow René Descartes’ lead and try placing memorable images/illustrations on them so that they could also leverage one’s associative memory (à la memory palaces) as well as for spaced repetition. 🃏