Richard and mods, just a discussion. Loved the two-parter, but personally I dislike random strings. First thing with a new router that has a random string of chars is probably to change it to something memorable. Sure its easy to copy/paste but still!
I have used a password manager for years, and its a pretty big and valuable database in itself. I use it partly to store other things like passport numbers and in my case it's quite big as my wife is a technophobe (she can just about manage a light switch), but my household of 7 (aged 10 to 79) don't themselves generally store their Apple IDs, MS stuff and will generally ask me if anything goes wrong with their many devices or they need to log in afresh to Netflix.
Anyway, for a while now, I prefer memorable random phrases. Personally, Pi  to 6 decimal places trips off my tongue (since I was young and impressed that it was enough to calculate the circumference of the universe accurately). That's good for number strings, but most of us remember some phrase or line from a poem. Rudyard Kiplings poem "If" has been a guiding light in my life and several lines are memorable. If I see daffodils in March I remember "wandered lonely as a cloud" from another poem.
So a couple of phrases, personally memorable to you, connected by a special character like an ampersand, will easily get to a dozen or more characters and then add this memorable phrase specific to each web site. It will easily be at least 15 characters but still short enough to type in quickly (or copy/paste) and you can make sure it contains all the right variety of characters.
What I've done with your password database is to rem out the random generation and added another field for a short memorable field limited to 5 or 6 chrs; For 599cd.com I could enter "Access", "Rick", "Captn", "Genius" or whatever. I then concatenate all three phrases.

Finally, Richard Feynman studied the psychology of how people choose passwords as he loved to crack them. Just wondered what you all thought of this approach?