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Decorate with spooky or dark-themed items. Watch Friday the 13th-themed movies. Play games with a dark or superstitious twist. Make a Friday the 13th playlist. Make dark and spooky refreshments.
As Friday the 13th is believed to be a day marked by bad luck, opt for spooky decorations. Pick a variety of decorations in colors like black, gray, and red to give off a spooky, ominous feel.  For example, find wreathes made out of black and gray flowers to give off a deadly, creepy look. Cut pieces of red felt into the shapes of droplets. Glue them onto a long piece of string to make a blood drop garland. Make use of your own bookshelf for decorations. Pull out copies of horror stories, like the works of Poe, to display at your party. You can try watching films from the Friday the 13th franchise at your party. You can also just watch horror movies in general to give off the spooky feel of the day. For example, watch horror classics like The Exorcist and Rosemary's Baby. Put a spooky twist on classic games. For example, look for trivia games online that have questions centered around horror and superstition. Play a game like Truth or Dare that pushes people out of their comfort zone. Try doing a game of Pictionary where you have to draw spooky pictures. Many bands, such as Everlast and Deer Tick, have songs called "Friday the 13th" that would be appropriate to add to a playlist for your party. You can also add songs about the day Friday, such as humorous choices like Rebecca Black's "Friday." Generally spooky sounding songs (e.g., hauntings, true crime, and real life disasters) can also fit on a Friday the 13th mix. Add something like, "The Wreck of the Edmund Fitzgerald." Websites like Spotify, Pandora, and YouTube may have ready made Friday the 13th playlists. Make dark refreshments, such as cupcakes, cakes, and cookies with black frosting. You can also use cookie cutters to cut out cookies into shapes of bad omens like black cats and full moons. Try to make 13 of each refreshment for an extra fun twist at the party. However, make sure you have enough snacks to go around.