One of my friends birthday was on Friday the 13th this year, and she always goes all out.
She had at it in a hotel party room, but you can also have it in a big backyard or basement or living room or something. In the spirit of the 13th she made everything glow in the dark, everyone got a glow necklace and it was decorated with all sorts of glow items.
Also, she had a DJ for dancing and food and cupcakes for everyone.
This party is such a great idea! It was the party of the year at our school, and everyone loved it!!