I currently have headcanon in two fandoms. There's my entire post-canon Taggart verse which is mostly headcanon because of where it diverges from the original source. More recently there's my "what if in present day..." SG-1 headcanon that I still need to flesh it out some more to see if it's viable to attempt for even one fic.

When I wrote a 20k Killer Instinct fic a long time ago, that was technically headcanon because of the way the show ended.

Today has been for editing and a little housekeeping especially for my in progress prompt tables and the handful of prompts that I have left are potentially useable.