Ideas and perhaps thoughts, idk what to put

A couple of ideas

So, this is just a random bunch of blabery or ideas i come up and forget because i loose my motivation to do so, or my life just makes me forget it.
Anyways, i have an idea.
I was thinking about two things, except one of them doesnt really works cause i dont watch it, but ok.
First, would be a fanfic of the DoG (aka Devourer of Gods from terraria calamity) Going into other worlds to feast upon powerful beings, except that he gets trapped there and has to get enough power to escape.
There, he will have to force himself to make a "human" look to disguise himself to not attract much attention since it could led to his eternal apprisionment or death, even if he is an ego centrical mechanical worm.
The "human" look would just be the godslayer armor.
The problem here is that, i don't really know what world to sent him to.
I have considered some hoyoverse games, but i've only played Genshin and have still yet to play HSR.
Then there is the Isekai worlds, which also dont work well because i dont watch these isekai animes cause idk.
And now i have no idea what to do.
I like this idea because its a different approach to a character with an interesting concept, but i really have no idea on what to do.
There is also this one idea that really isnt an extraordinary new or something.
Basically the "my oc x genshin" fanfic except instead of genshin i use Honaki Star Rail.
There is one singular simple problem, which is that i havent started playing HSR yet, so i dont know much of the story.
Also, for that fanfic i would make Sam (my oc's name and character) use less of his sword and use guns cause im an ultrakill fan and i want to use ultrakill ideas and maybe perhaps some original ideas too.
I will put more ideas here if i get some.