So ... I'm a maladaptive daydreamer. I have A LOT of stories I'll never tell.
There is one story that was a major part of my daydreams for years though and I almost turned it into a novel (if only I'd had the discipline to write the whole thing back then): It's about a girl who finds an ancient egyptian amulet with a god/demon/spirit entity trapped in it and an antagonist who starts a cult to bring his dead family back and accidentally start a bit of a zombie apocalypse in the process (it makes sense in context ... they arent's typical zombies either, their bodies don't rot but their minds aren't the same as a living person and they basically become violent psychopaths because they're completely detached from the world of the living and being in it causes them suffering ... I used that concept in twice
). I'd plotted it all, but most of my daydreams were about the Egyptian gods and their relationships and life, and then I turned those gods into RPG characters with a friend and, well, 7 years of character development later they're nothing like their novel versions and I've outgrown my teenage protagonist who was a lot like me at age 18.
So yeah ... I'll probably never write that story down, even though it had potential.
Another story I'll never write (again because I've kind of outgrown it) is one about a teenage girl whose guardian "angel" (they're not angels, more like guardian spirits) is Death. The Grim Reaper. He calls himself Grim. What caused this was a minor near death incident and a fuck-up on Destiny's part (yes, she's a character. She also flirts with Grim a lot. It's cliché) and that's one of the reasons why I never even started working on this story - the whole premise is kinda meh. Then the main conflict was that Death couldn't reap everyone because of his guardian spirit duties and he couldn't stray too far from the girl for too long and, well, that same not-zombie apocalypse. Told you I used it twice. I do like the worldbuilding and characters though, besides Grim this story also featured a few witches and wizards, the other three horsepeople of the apocalypse, an anthropomorphic personification of Madness and Life and an intelligent magical horse called Pyotr. I might do something with these characters some day. Minus the "chosen one" teenage protagonist because that's just a tired trope imo and not what I enjoy writing. And I did recycle Destiny and put her in another story that I am planning to work on eventually.
I have A LOT more stories, including one about a parallel dimension (or hallucination or dream) with a lot of pirates, a, ahem cough illness that starts out with mild flu-like symptoms but then becomes deadly very quickly and leads everyone to quarantine with the main plotline being a bunch of people trapped in a shopping mall because one person had the disease and exploring their dynamics and the dark side of the human mind ... cough cough Back then I came up with a particularly nasty strain of Ebola. That was shortly before the Ebola epidemic. Needless to say I never wrote this and never will holy fuck this aged like milk), Lucifer as a babysitter, a story about a half vampire named Wolfgang living in a world where supernatural beings coexist pretty peacefully with humans (for the most part. It was meant to explore racism ...), a sci fi film noir crime story that explores classism, a thriller about a serial killer, a fairytale parody, a story about how time freezes for everyone but one guy for what feels like a year to him and his personal growth during that time, and a story about a genetically augmented intelligent rat.
...
I have a lot of stories.