“We should do a theme, or something.”
Why not pirates? Lots of people are into pirates! Back in 2004 when the first Camp Crucible started up on it’s own, we chose a pirate theme for the sheer fun of it! And as time went on, we used the pirate theme as an excuse to “sail” to all sorts of exotic and sometimes fictional locales: The Barbary Coast, New Orleans, Jamaica, & Treasure Island. Each “locale” was an excuse for further hijinks: ship vs. ship “color wars”, actual treasure hunts, themed parties, belly dance classes, etc.
(And while the thematic elements are all in good fun, you can show up without a scrap of themed “stuff” and still have the most fabulous time ever.)