just think of something you like, and then make some next shit up out of nowhere. lets say you like history? write a short story about a guy in WWII getting dropped into normandy on d-day. you like space shit? write a story taking place in some next futuristic generation about some next space adventure shit. you like politics? write a fucked up story about some new president taking over the world by convincing everyone that hes legit, but this one guy know what hes up to and he tries to cinvince everyone that this guy is fucked but no one listens.
honestly, the possibilities are endless, just let your mind wander, whatever you write on that paper will make sense, because in that world YOU decide what makes sense and what doesn't.
I dunno if my post made any sense but whatever