If you want to avoid wordlist vulnerabilities, try this:

Choose a lyric from a favorite song. Concatenate the first letter of each word in the lyric. Example:

“Rock the Casbah Sharif don't like it”

Becomes:

rtcsdli

Add capitalization or numbers/special characters according to your own pref. For example, maybe your decide to alternate lower and upper case and always end with a bang:

rTcSdLi!

Although you have to use the same capitalization rules for all passwords if you have any hope of remembering them.