I tag differently depending on genre; for example with romance I tag for the professions of the main characters, and have a custom graph to see the spread across all the romance books I read. Surprisingly (but fantastically), book-centric jobs are very common in contemporary romance! Lots of book store owners and public librarians. I also tag for tropes, and most things that romance.io tags. I also love my graph of relationship histories (enemies to lovers, second chance, childhood friends, etc). Lastly, I have a graph for who recommended books to me.

Thank you so mıuch everyone. These are great. I already created 6 charts and I'll continue playing around with tags. I love it. I also loved the "queer or boring" chart in the TSG instagram stories lol.

My custom charts:

• three pie charts for page length, hour length, and combined page+hour length broken down into smaller increments
• pie chart for book source (from-library, from-store, from-borrowed, etc)
• bar chart for year added to TBR
• bar chart for time on TBR (I use a spreadsheet to calculate the time between "date added" and "date started" and the tags are incremented by months up until the first year and then by year)
• bar chart for original language for translated work
• bar chart for "recommended by", I tag every book I add to my tbr with "rec-from-" so I can remember where I heard about it
• a bar chart for book setting and author nationality, sometimes one book gets multiple of these tags
• bar chart for author demographics, I've got tags for various author genders, an LGBT tag, and a BIPOC tag. I'd actually love for these to be pie charts with one color being e.g. "has the LGBT tag" and another being "does not have that tag" but that isn't an option yet
• bar chart of publication year by decade

It's a LOT of tag management, but I really like the charts!!

I have bar graphs for page and audio book length broken down into smaller increments of 100 pages or one hour. I also track where the book is from (owned/borrowed from a friend /library) in a fun little pie chart and author nationality (I track country and continent) in a bar chart although this gets a little unmanageable if there's a lot of countries. I've seen other people track what year they bought the book (if they own it) and gender of the author.
If be interested to hear other ideas if anyone does anything differently!

Hello! For now, check out this Instagram post — https://www.instagram.com/p/C4n7qR_Lu_M/?img_index=1 — and this Story Highlight: https://www.instagram.com/stories/highlights/18426847537054429/