Having a hundred passwords in various places can tax anyone, and having ultra secure passwords is especially difficult. So I use a method an old sysadmin taught me when I was about 18, and it enables me to use 10 character passwords with all the right combination of character types in them. They will register as very strong on any test.
Here's an example I just made up;
14 monkeys at Blackpool zoo looking up at the stars
We take the numbers and first letter of each word to form the password, and convert anything sounding like a special character. In this example we will convert "at" to @ and "stars" to **(StarS being multiples). So the password will be;
You can even leave yourself a reminder on paper, if you just write down the start of the phrase it will jog your memory. An even better way is to choose a phrase that means something to you, which I wont do here for obvious reasons. A couple more examples;
The 23rd earl of Salisbury is worth 12 million pounds
My sister, Joanne, has worked at starbucks for 6 months
Hope that helps you remember some new awesome passwords!