Think of it as building a toybox for your characters, not a museum. The most complex world feels flat if the characters don't interact with it meaningfully. I create 'toolkits' in my documents: a list of local curses, common gestures of respect, typical tavern games. When writing a scene, I can glance at that toolkit and have a character casually use one, adding instant, low-effort depth. The online creator makes these toolkits live alongside the narrative, so the world's complexity actively enriches the moment-to-moment storytelling.