Spooky holiday where kids dress up and trick or treat
Costumes are used to create a new identity for one day. In the display there will be costumes of all kinds. Some examples of costumes would be a witch, Disney princess, Disney character, superhero, etc. People correlate costumes with Halloween.
Jack-O-Lanterns are made for decoration during Halloween. They can be made to be happy faces, funny faces, or scary to represent spirits and goblins. Jack-O-Lanterns can be used in a visual display as decoration. When people see Jack-O-Lanterns they automatically think of Halloween.
Orange and Black colors
Orange and black colors are usually never worn on any other day. These colors represent the holiday of Halloween. People recognize orange and black to be spooky and fall-like for the holiday.