Animation plight

So, the wheels in my head have been turning, as my sanity is only so-so...I dunno why I'm Gaston all of a sudden, but I've been thinking about my future animated series. You all know I'm making a series about SuperVillain, Blue Banana, right? Well, now you do. And I'm also planning on making an animated series about my character Firefly as well, where he has to save the multiverse from his evil clone. And I'm also also thinking of making a spin-off series to my friend's own animated series. I think my friend might like that a lot. But now I am stuck in one major crossroads. I'm thinking about making an original animated series. No Star Wars, no pony Jedi, no Justice League, and no making it a spinoff of my friend's series. Gonna be 100% original. Except I have no ideas on what to do for that. Yeah, probably should have thought of that ahead of time. And I'm not gonna ask any of you for suggestions, as much as I would like to, because I feel like I'd end up stealing ideas in the end, and I don't want to do that.