#1 thing is to make sure all accounts have beneficiaries. Accounts should have a primary beneficiary (your spouse), and if there is the ability to make a secondary beneficiary, see if they will divide it among any children you have . This is of paramount importance.

I know someone who passed away suddenly, and did not have a beneficiary on his “play money” stock account. His widow had to go through a lot of hoops to get access to it.

From there, I am a big believer in paper. I want those statements coming to the house. I file them all, and my wife knows where I put them. If I were to go poof , I’m sure she (with a lot of help from her siblings) would make sure nothing is missing.

The Crypto is a different story, of course. When you can Be Your Own Bank, there are no beneficiaries or contingencies: it’s all keys. I have a bit of crypto in a HW wallet. But, years ago I moved some BTC to Coinbase, and it’s still there after all these years. I am thinking of moving the rest, just to make it easier for people to sell if I do go poof.