I highly recommend this article, entitled "13 little-known punctuation marks we should be using." Why not? (Well, keyboard-wise it's a little tricky, they're not widely known, etc., etc. But they're still fun. And possibly even useful.)
Additionally, I also recommend a fabulous, classic sketch by Victor Borge called "Phonetic Punctuation." My dad used to give public readings and perform this at talent shows. I loved hearing it. I now question the punctuation of the text Borge used, but I love it all the same.
It would simplify my editing life considerably and blast away much of the remaining sexism in writing if we could use it. My linguistics teacher at BYU said that integral parts of speech like pronouns are terribly hard to change or even modify slightly because they are built into the foundations of our language ability; nevertheless, I have to hold out that the English-speaking world will one day consider accurate and fair expression as something worth seriously attempting.