In June 2010, Lilly announced on The Late Late Show with Craig Ferguson that she would be writing a children's book and recited several excerpts.
She has stated that her literary inspirations are children's book authors such as Roald Dahl and Edward Gorey.

On 18 July 2013, Lilly debuted the book, titled The Squickerwonkers.
The release event was held at the San Diego Comic-Con, where she attended a book signing for the work in addition to providing a reading performance.
Lilly has stated that the idea for the book first came to her when she was 14 years old.
The foreword to the book was written by director Peter Jackson.
She described the work as "a graphic book series designed for children", stating that the book is about a young girl who joins a group of characters she described as "this family, the Squickerwonkers, and they're strange outcasts who all have very particular vices".

Lilly has stated that future books will each reveal a new Squickerwonker character and unique vice, which will eventually become the undoing of the character.
The illustrator for the book is Johnny Fraser-Allen of Weta Workshop, a New Zealand-based concept design firm that worked on films including The Hobbit.
Lilly stated that the goal was to "make a book that we would like to have read as children and that we would still enjoy as adults today".
In June 2010, Lilly announced on The Late Late Show with Craig Ferguson that she would be writing a children's book and recited several excerpts. She has stated that her literary inspirations are children's book authors such as Roald Dahl and Edward Gorey.
On 18 July 2013, Lilly debuted the book, titled The Squickerwonkers. The release event was held at the San Diego Comic-Con, where she attended a book signing for the work in addition to providing a reading performance. Lilly has stated that the idea for the book first came to her when she was 14 years old. The foreword to the book was written by director Peter Jackson. She described the work as "a graphic book series designed for children", stating that the book is about a young girl who joins a group of characters she described as "this family, the Squickerwonkers, and they're strange outcasts who all have very particular vices".
Lilly has stated that future books will each reveal a new Squickerwonker character and unique vice, which will eventually become the undoing of the character. The illustrator for the book is Johnny Fraser-Allen of Weta Workshop, a New Zealand-based concept design firm that worked on films including The Hobbit. Lilly stated that the goal was to "make a book that we would like to have read as children and that we would still enjoy as adults today".
Evangeline Lilly