Posting here for traffic.
We recently had a death in the wider family, and trying to sort the admin stuff out has been problematic. There were half filled out insurance policy forms, bank account applications etc, and with a lot of stuff now being online it's difficult to sort out what's what and what's not. Didn't help that they were hoarders and their filing system was a bit erratic.
My filing system is pretty good-I could lay my hands on most stuff immediately (well, I will after I've put away the latest pile of paperwork!) but so much stuff is on my phone and laptop, with passwords and security codes stored by them that it would be difficult to get to it all.
Thinking of the future, I've started making a list of EVERYTHING. Bank accounts, pension details, insurance policies, passport numbers, addresses, phone numbers, you name it, I'm listing it, so that when the time comes my adult children won't have to spend hours looking for stuff, it'll all be in one place. When they need the actual paper version of it, it'll be in the relevant files (hopefully!)
Not everyone will want to do this, or have the time to do it but if you can, please do. The wasted hours that are going into hunting for things that may or may not exist is very frustrating. Thank you.