Slides come in multiple pages (slides).
You can resize the pages so it is a standard sheet of paper (File > Page Setup> Custom> 8.5" x 11")
It is not linear like a document, so you can design it however you want.
The lines shapes, text, images and more you can add to the slides are like the parts you glue on an interactive notebook...only multimedia.
Google Slides is free and you can add as many pages as you want.
Since it is cloud storage the notebook can be accessed from any device, and won't clutter up your classroom.
Image annotation - students pull in an image then use shapes to help annotate over image
Caption This! - students use speech bubbles/thought bubble shapes over an image.
Draggable manipulatives - vocabulary words, shapes for addition/subtraction, protons/neutrons/electrons for an atom
Digital diorama/map - recreate a scene from a story, history, etc. Have students add text boxes to label
Comic strips - students can pull in images from multiple sources and add text boxes/speech bubbles (great for foreign language!)
Lab reports - students describe their steps and thought processes as they complete labs
Series of pictures - students can show how steps in a process happen in any content. How to do burpees in PE, solve an algorithm in math, events that lead to war, etc.
Coordinate Plane - set the background of the slide as a coordinate plane and students can use small circles to plot points and add text boxes explaining the problem