Other Series:
* The Big Nate series: This is a graphic novel series about a mischievous and witty fifth grader named Nate Wright.
* Diper Överlöde series: This is a picture book series about a baby named Rowley Jefferson, a character from the Diary of a Wimpy Kid series.
Standalone Books:
* The Geeker's Guide to Life: A non-fiction book with tips and advice for navigating the challenges of being a geek.
* The Only Thing Worse Than Being a Geek: A sequel to "The Geeker's Guide to Life."
Digital Content:
* Poptropica: Jeff Kinney is the creative director of the popular online game and website Poptropica, which features an interactive world filled with adventures and puzzles.
Note: While Kinney has created and written all of these works, he has also collaborated with others on some projects, particularly in the realm of comics.
Let me know if you'd like more information about any of his books!