I see a lot of references in the treats this year!
First, we have what is clearly a weeping angel, the flickering statue.
The bat-thing with the red wings, that's a Batarang from one of the later Batman series, right?
The frilled blue eel in a pot is a Wiggler, a small, catchable creature in the video game Monster Hunter World.
The creature that looks like a fat brown cat with a pumpkin is, I think, a Pumpkaboo Pokemon that's climbed out of its pumpkin.
And the oil-esq