If you have a long enough password space another good technique is to take a large dictionary and randomly choose two words. These are much easier to remember than a string of random letters & numbers. I still recall my original CompuServe password from the 80s was "water boldly".
A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening the landscape of the idea. John Ciardi