Great thread! I’ll strongly second Casper, as it’s one of my favorite Horner scores and quite an underrated one at that. I watch the film and listen to its score quite often during this time of year. Hocus Pocus is a must, indeed. Another great family film with a terrific score (although sadly still unreleased) is The Witches. It’s a great film for this time of year.
In addition to those, there’s always the customary ones many may mention:
Danny Elfman’s Beetlejuice
Elmer Bernstein’s Ghostbusters
James Horner’s Something Wicked This Way Comes
Howard Shore’s Ed Wood
David Newman’s Meet the Applegates
Douglas Pipes’ Monster House
Speaking of Newman, I also love watching Little Monsters during this time of year, as well.
I always check out Chris Young’s Flowers in the Attic during this time of year, too. Beautiful and haunting.
And I’ve always enjoyed some elements of Mark Isham’s Fire in the Sky, too - especially the cue “Evil Spirits from the Sky,” though perhaps that film borders on horror a bit?
But of course, maybe these are all low-hanging fruit, as well?
I’ll post more if they come to mind.