Something that seems to have slipped quietly by, was a couple of appearances of Lucille, Negan's barbed wire-wrapped baseball bat from The Walking Dead. One was in Supernatural, which I don't watch, but it was apparently there. The second was wielded by Stuart as he came running into a bedroom thinking there was an intruder. You only get a glimpse, but it's definitely Lucille (or a copy!) and it's definitely there!