I have a physical folder of important vital documents (passports, birth certificates, Social Security cards, etc.). Other stuff I usually just take a picture of

I have a physical folder of important vital documents (passports, birth certificates, Social Security cards, etc.). Other stuff I usually just take a picture of on my phone and email to myself with a heading of some words that I know I'll think of in the future (e.g. for a car repair "Sienna lock stuck repair car Pepboys" or something like that). Works pretty well for me!