I'm reminded of a thing as I'm getting a car oil change today: I redoubled efforts to organize paper copies of auto maintenance repairs because, especially after I've ditched the dealerships for maintenance and repairs, I really need to track what maintenance and repairs have been done over time, so that I know if it's really time to do a certain thing when some places pitch it (which they often do prematurely). I think I'll be building a spreadsheet for this, too. (I'll take Stupid Things I Have Time To Do in FIRE Life for $500, Alex.)
Oh yeah, I keep some prescription hard copies, too, for HSA documentation purposes, out of paranoia after I nearly lost a set of electronic copies -- though I've improved my electronic saving, too.