Halloween themes often revolve around spooky elements like ghosts, witches, and monsters. Common decorations include jack-o'-lanterns, cobwebs, and skeletons, creating an eerie atmosphere. Many people enjoy dressing up in costumes that reflect these themes, ranging from classic vampires to popular movie characters. Another popular theme is the celebration of autumn, featuring elements like harvest festivals and fall colors. Decorations may include hay bales, corn stalks, and pumpkins, emphasizing the seasonal change. Halloween parties often incorporate games and activities that align with these themes, making the holiday enjoyable for all ages.