I run a campaign where the players are students at an adventuring university. The adventures are usually one-off single-shot adventures. It's built so that if someone misses a session it's no big deal, and if a new person wants to jump in for a night of play it's no big deal.
The party has gone into a haunted house, accidentally woken a graveyard of undead (all at once), run a gauntlet of traps and puzzles, and fought a calzone golem.
Yeah. A calzone golem. As written by someone else. Great fun, spurting hot marinara sauce with each wound, etc...
Anyway, I'm looking for more ideas. Either small pre-written adventures or just ideas folks have. And if you have run or played in a similar campaign, I'd be interested in hearing some of your adventures as well.