I'm so glad you asked this, Melody, because it forced me to Google the term. I always thought an interactive PB was a novelty book where the reader physically manipulated part of the book. Think: lifting a flap, pressing buttons, or playing with the built-in finger puppet. Once I did the search and learned the interaction is intellectual, my mind was opened to a sort of sub-genre of PBs! Thank you for that!
Anyway, here are a few examples I found:
Press Here by Herve Tullet
Don't Feed the Monster by Sigal Adler and Abira Das
The Monster at the End of this Book by Jon Stone and Michael Smollin
Best wishes on your project!!
(Edited to add: Oops! I cross-posted with Darshana!)