I don't really understand what you're asking for.
So are you saying you would like someone to give you so OC designs that you could use for you book (like adopts)? Or are you asking for people to give an actual OC to you? Like one that already has a name, personality, design, backstory, and interests?
If you're looking for designs then maybe there are some people on da that have adopts open with some character designs that you could buy for points, or maybe even for free.
but if you're looking for OCs that already have all there characteristics and not just design, then uh... I'm not sure that's how it works. I believe it's much better to make your own OC with your imagination and creativity instead of just buying or asking someone for an all finished OC that you didn't make yourself. But that's just how I see it.
But if both of theses weren't what you meant then I'm sorry I don't really understand what you're asking