Signs as Halloween specialties

Haunted Houses
Ophiuchus

Pumpkin carving
Gemini, Pisces

Halloween music
Taurus, Leo

Costume parties
Aquarius, Aries

Trick or treating
Sagittarius, Cancer

Over the Top House Decorations
Libra, Virgo

Halloween/Horror movie marathon
Scorpio

And then there's Capricorn who stays at home and if anyone knocks on their doorbell, will scare the living heck out of the kid with a mask or scary costume. (Will give candy if you bring a dressed up dog with you though)

Happy Halloween!