Make sure you have the most up to date info on your company's 401k provider and FSA/HSA providers (if you used them). Double check you can login to them, and verify there's no ongoing fee to keep your account open. You have about 2 months to make a decision on purchasing COBRA; so you don't necessarily need to buy into it immediately. Some enterprise software will allow you to have a free family plan, make sure you can retain access to that (1pass is an example). If your company offers and you use pet or legal fee insurance make sure you have alternatives set up. I don't think your life insurance policy will matter.
Make sure you know when, how much, and how your last paycheck will be delivered.
Make sure you know what equipment you need to return and how (have them tell you, don't volunteer info). If they just tell you "anything with an asset tag" ask for a list.
Make sure you've got any personal stuff off your work PC before the meeting, because you sure as hell can't access it later, and log out of your accounts.

This feels like a desaturated Mandela effect meme to me as I dive deep into my folder and find the following: