You work Star Wars in by having Sam and Dean regretfully turn in the Impala to buy a spaceship for hunting and trading and then they happen to bump into Anakin and Obi-Wan in a whole mess of intrigue and... lightsabers.

Why yes, I still long for a Sam/Dean space opera AU!

ALSO, hit me up later if you need any poking or help with your xmas fic. I'm still writing mine so we can have mutual yelling at each other. IT'LL BE GREAT. ;)