Halloween has become more than just one night of revelry; it’s an entire Spooky Season, with ample opportunities to celebrate those darkest and most macabre impulses via decorations, costumes, food and more. Parties are always a fun showcase for individual creativity — not just how wild you can go with the (presumably fake) tombstones and spider webs, but what there is to wear, from topical costumes to classic creatures that amaze and repel at the same time. It can be a tough challenge these days to gather together safely to celebrate, but the movies have given audiences lots of fantastic …