Anything of mine written after 2007 is open to remixes, sequels, art, podfic, etc. Go nuts, don't even have to ask. I would like it if you'd drop me a link so that I can add it to the fic's notes, though!
Pre-2007: Is not my favorite of my work, and I'd prefer it if you kept to remixes only.
Preggers. Because that was co-written, please ask Vera for her permission if you want to remix it.