Art book [Requests are closed]

question

hey guys i need some ideas to write about! I want to write one an oc insert book but idk which oc or what fandom i do have some in mind and I know I have alot of books to write but still! 

1. sonic boom 

2. casino cups

3. gravity falls

4. any type of movie 

5. anything else you want 

i'll write an oc insert in those if it works. hope you guys can decide and don't worry i'm working on the hazbin hotel book and the others!