I've set up a Legacy Contact with my Apple ID, since that provides access to all of my data, with a close friend in the event of my death. It was fairly easy to set everything up and I just had to provide their email address and send them a document produced after the setup was complete.

It's definitely given me peace of mind, as I wouldn't want them to be in a situation where my entire digital life was lost to them. They would also then be able to close all of my accounts and notify others of my passing.