How long could you sit on your current WIP/manuscript? How about... over 100 years? That's what this author is doing, along with others who are taking part in the "future library" project...

• https://www.theguardian.com/books/2021/aug/25/tsitsi-dangarembgas-next-work-wont-be-read-by-anyone-until-2114-future-library
• https://annerallen.com/2021/10/chapter-titles-great-marketing-tool/
• https://www.bestproducts.com/lifestyle/g22024547/most-popular-book-by-year/