I think it would be situational or person specific. At one time I had 'info cards' of key computer sites, emergency team memeber contact info (cell # home # etc.) and some specific passwords and/or emergency access info.
Now I've got my DayTimer with home info, car info like plate number, VIN and the like and a bunch of passwords and contact site info that I can use to figure out how to get on computer sites I may need (done up so they make sense to me but not to someone else). I keep that updated each year with a full rewrite each January.
Paul -