Sorry for your loss.
My wife and I are empty nesters now. We have followed a more traditional model where I have been the primary breadwinner, while my wife focused on the home and family, with some part time jobs sprinkled in.
When our kids were younger, we had 10x my salary in term life insurance on me, and 1.5x my salary on my wife. That was pretty much the gameplan: money solves everything.
Now the game plan is totally different. It isn't so much about raw dollars, but more about where the hell is everything and how would she get access to it if something happens to me. Our game plan now is
1- All financial accounts have beneficiaries specified online
2- All bank account passwords, retirement passwords, computer passwords, network passwords, and phone unlocking instructions are stored in a password manager that has been backed up to the cloud. Wife knows (or should know) how to retrieve the master password and get at everything.
3- We have a basic will stored in the cloud that leaves everything to each other
4- We have rolled all old retirement accounts over into one institution for simplicity. No old 401ks floating out there from places I quit 10 years ago.
5- I do get one year's salary of life insurance for free through my employer, but that is the only life insurance we have. Term life got too expensive, and our nest egg is at a point where we really don't need life insurance any more.
6- When we bought our house, we (or rather I), screwed up and made me the sole owner. I have told my wife that if something happens to me before the house is paid off, to take the life insurance money and just pay the house off. Get the lender out of the equation, and then take our simple will to a lawyer to get the deed squared away. It some states, this can get really messy (looking at you Minnesota)
I think we have the big ticket items covered, but I am little concerned because my wife is not financially savvy. And there are so many little things, like does she know how to check the propane tank and order a refill when it is low? Does she know that she needs to clear my browser history and destroy all my hard drives when I am gone? If I do pass early, there is no way she is going to be able to setup netflix on a new device.
I think a big item is making sure your spouse can get into your phone and cloud accounts, if for no other reason, than to have access to family photos.
H