One trick for coming up with several unique and easy-to-remember passwords is to create a silly sentence related to a given website you are creating the password for, and then simply use the punctuation, capitalization and first letters from the sentence as the password. For instance, say I wanted to make a new password for my CF account, I could come up with a sentence like:
The honorable lord fluffy, Virmir, rules the Crimson Flag Forum with 2 fuzzy paws!
The corresponding password would be the first letters of each word and the punctuation/captilization, or: Thlf,V,rtCFFw2fp!
Very strong password, and easy to remember if you know the corresponding sentence...! Just my simple advice for this sort of thing.