The True Meaning of SmekDay by Adam Rex is fantastic. Really.
If you have any sense of humor at all, you need to read this book. If you loved Hitchhiker’s Guide to the Galaxy, you need to read this book. If you’re looking for a fun, original middle grade novel with a spunky heroine named Gratuity and a lovable alien named J.Lo and a surprisingly cat-like cat named Pig, well… then you’re kind of weird, but you really need to read this book.
Seriously, you need to read this book.