Honestly, I have not done anything myself yet. As many of us do, I have emails sent to me at four sites; I have financial records sent to me from a variety of sources – and they all require a password. I have business records and personal records all over the place. What about the fun things? Facebook? Linked In? or whatever follows?
There are more than a couple of tools available on the internet and websites to assist you in implementing your desires. I suggest that you take a look. You may want to consider putting virtual asset information on a flash drive and storing it in a very secure place.
Most importantly, whatever you decide to do, you must, one way or another, inform your successor trustee and/or executor. This can be done, the old-fashioned way, on paper.