or you could do the much easier - remember a constant salt (like crocodile8) and then just append the site domain to it.
Then you md5(crododile8news.ycombinator.com) and the first 16 characters are your password. If needed cap first non digit.
There are numerous online tools - so whenever you need your log in you can calculate it online. Or have it as an app on your phone - simple, hard to forget.