Ahoy there, mateys. Pirate parties provide a great backdrop for fun costumes and creative games. This theme works well indoors or out, and it's also a good one for multi-age parties since pirate fun cuts across many age lines. Use your computer to generate treasure map invitations to the bash.
Game: Treasure Hunt. Set up a traditional scavenger hunt under the guise of searching for buried treasure. This can take place in a backyard or inside. Divide your guests into small teams of two or three each and have them hunt for a variety of items. Set a time limit. The team to find the most items wins.
Party favor: Eye patches.