My ICAM 120 class was made up of only seven people, so we all worked on this one project together. My task was to see to all the module's scripting, while everyone else worked on art. The NWN Toolset uses C, which I was somewhat familiar with, so after a couple of brief tutorials, I was well on my way.
It takes some creativity to reproduce a video-game-atypical scenario within the limited capabilities of a fairly typical game set. Dirty toilets in the module are actually game objects that have been booby-trapped, a mechanism that is supported naturally by the NWN system. To clean a toilet, the (incidentally invincible) player simply triggers the trap.