The swipe file again

• Hovels or nests are made from the fine silks and other luxury goods of a wealthy city. 
• A dungeon's map is based on a building's floorplan, but turned to an incorrect orientation.
• An occupying army has gone batshit crazy native trying to "maintain order."
• A new weapon or fighting style appears to the natives as some weird monster.
• Several different NPCs turn out to be the same person in disguise. 
• An empire's royal family are a completely different species. 
• Half-elvenness is contagious.