Table of contents page is a great organizational tool for interactive notebooks! There are four pages of different styles to use.
I love numbering my days of the semester - it keeps me organized, as well as my students. I have included TWO table of contents (TOC) for those who like to number their days, as well as TWO without days, and just page numbers. They work if you have just a few concepts in your unit there are two TOCs per page; as well as one page for one unit that has many topics.