Very short list

1. Hear me out... Harry Potter x Owl House

Harry potter magic for humans and wild magic for witches

2. Adventure time but reincarnated as finn the human (idk if anybody has done this yet)

3. Owl house but dipper and mabel are there due to a weird portal appearing during weirdmageddon, and they need to return back home

4. village building in Avatar, ATLA, or The Legend of korra

5. Fallout but without any kind of "magical" system and just pure survival and luck and no magical pip boys that can carry an armoury (For anybody that has no clue about fallout, pipboy is a watch thats also a computer, think apple watch but simpler and bulkier and also is specialised in making sure the wearer survives the wasteland)

6. Reincarnation as stan pines im gravity falls

7. Owl house, but an oc is reincarnated as a titan and will just be a chaotic or righteous OP character

8. Reincarnated as a dipper, BUT without a home dimension because the backstory is "During the argument between stan and dipper between opening the portal (Season 2 episode 12, this was when stan wanted Ford back and opened the portal) but stan Repaired the portal wrong and they're whole universe was destabilised and destroyed and leaving only dipper the only person close enough to the portal (idk if he actually was but lets pretend he is) to accidentally escape and survive the destruction of his home universe and now he just wanders the multiverse until he find a magical ring that compells him to wear it and when he does, he gets possessed by the mc who has watched the show and has no idea whats going on"

so pretty standard stuff

9. Owl house, but luz gets a "cliche" system from the titan and tries to become the greatest witch with it (This was a brain fart lol)

-------------------------------------------------------------

That was all my ideas that i wanted to do for months and has written down

i just wrote this so some people may be able to use it if they can't come up with anything

anyways Ciao

Also, for some reason, good owl house fanfics are really rare