Refer to this link https://boards.straightdope.com/t/what-spreadsheets-have-you-created-for-personal-use/790270 back from 2017.
I had compiled a list of 129 unique items from that list that I had students learning Excel comment on. Some of the more interesting ones were “Dates of my period” and “All women I’ve had crushes on, why, quality of relationship”.
I’ll leave it as an exercise for the reader to find other interesting examples from back then.