Here are a few of the theme ideas we have brainstormed, feel free to use these or take inspiration... please feel free to send in any ideas you would like to see others do.

Celtic

Roman, vomitoriam optional

Greek

Fairy

Cannibal

Elvin

"Hobbit", bonus if everyone goes barefoot

Egyptian, real or painted gold and jewel decorations, depending on your budget

Dragon, add some fire to any meat and you are on, fresh peppers will add the best flavor

Troll, well really any goop ina pot will do

Spanish

Italian

Vampire, bloody-mary anyone?

Winter Solstice or Yule, look to the pagans in you group for extra help here, we are a helpful bunch

Spring equinox

Halloween, could be a real treat to have people dress in medieval costumes...

Harvest festival

Picnic

Buffet

Formal sit-down

Pot Luck, much easier on the autocrat

Stone Soup, read the book