A Spartan, the legendary warrior in the Greco-Persian Wars, made famous through films such as 300, translates well into a powerful and masculine costume. The costume itself can be created through many items found in your own home, or through a few small purchases at your local thrift or fabric store. A successful costume will be in the details, so research visuals of Spartans through films or the Internet prior to crafting your costume.
Drape the maroon-coloured sheet around your body like a toga, wrapping it around the neck and over one shoulder and leaving the other shoulder bare. Clasp the sheet in place with a gold clip (a hair clip will work well) at the shoulder so the clip is visible from the front.
Measure the length and circumference of your forearms and calves. Cut strips out of the poster board that meet these measurements. Paint the outside of the poster board gold.
Roll the poster board into tubes to cover the calves and forearms like armour. Secure in place with clear tape.
Cut a "Y" shape out of the front part of a cloth winter hat. The hat, when rolled down, should be long enough to cover the entire face. With the "Y" cut out, only the eyes and mouth should be exposed and the forehead, cheek bones, nose and back of the head should be covered by the hat as armour. Paint the hat gold with fabric paint.
Add black boots or shoes to round out the costume and carry a sword and/or spear as accessories.