I'm a well read grad student who's bluntly honest about all things, although I try to be most honest about myself.
Rocket is my everything, so he'll be used for books I'm currently reading. Right now, Murder of Crows for Supernatural. Even when I'm done reading the book, Rocket will stay up until the category is called.
Baby Groot will be used for called categories, while Rocket and Groot in the same icon indicate books that have been finished, and that have also been called.
I'm going to try to use a new icon for each square, which I think is very doable. And really mostly fun for me!
The is the original card, with, le sigh, no Rocket at all!