spreadsheet stuff
One of my hobbies besides webdesign here is making spreadsheets for various information. One of the ones I've put a lot of work into is fish data that has some controls that let you modify how the data is displayed across the sheets that process a database of fish information into something readable. There's no external code for this one, everything is contained within the formulas that Google Sheets allows.
My personal spreadsheet that tracks every episode of every podcast I've listened to, and I've kept updated since 2019 has about 6k rows. I learned how to do fun SQL things in Google Sheets so it also tells me what 20 shows I've listened to the most each year.