The other day I was helping some friends with the cocktail menu for their annual Halloween party - they don't do mixed drinks usually.
This conversation was held over a glass of one such suggestion, the Hanky Panky.
Yes, it isn't a very Halloween-y name, given it's something the older members of this forum had chaperones to prevent.
But before it meant THAT, "hanky panky" was slang for "magic" which is definitely Halloween-y.
Basically a 2:1 of gin and red vermouth, plus a teaspoon or two of Fernet Branca.
Fernet tastes more or less the way Vick's smells, and if that doesn't sound magical and spooky, to you...