Doing two days because my first is so short.

Day 12 - Have you ever attempted an "adaptation" fic of a favorite book or movie but set in a different fandom?

No, but it's an idea...

Day 13 - Do you prefer canon or fanon when you write? Has writing fanfic for a fandom changed the way you see some or even all of the original source material?

I enjoy canon, and I stick with it in a lot of ways, but I think anything we write in fanfiction really creates fanon right then and there. We make assumption and presumptions about the way the characters would react/behave/respond and how the world would spin, but only the creator of that fandom can really determine canon. Fanon is our gift, our admiration of the canon they created. I'm not sure how canon purists handle fanfiction, fanart, etc., because to be quite frank, unless one is typing a transcript, it is almost impossible to remain canon and go beyond the framework of the fandom. I like staying true to revealed facts, but I don't want to be constrained to it, and I really love some of the fandoms (like certain comics, etc.) that have such long histories that their canons are a mishmash of space to play in.