Until recently Hallowe'en wasn't particularly celebrated in the British Isles. The odd mask might have appeared in the local newsagents, and children at school might have peformed some sort of spooky play at school, but that was about it. Instead, the emphasis, at this time of year, was on Guy Fawkes Night, and that meant private bonfire parties, fireworks, bangers and "Penny for the Guy" on the Fifth of November.
For the celebrations tonight, why don't you fill up your hip flask with a hot bullshot cocktail? Normally this is drunk cold, on ice; but I see no reason why it shouldn't be served hot (in a similar fashion to mulled wine or cider) and I have a sneaky suspicion that you might find it even better this way.
Empty a tin of beef consommé soup into a large pan. Pour in a large slug of vodka and add a dash of Lea & Perrins Worcestershire sauce, a squeeze of lemon juice, a pinch of celery salt, and finish it off by seasoning it with salt and pepper.