During my AR class, I saw a great reference that can use it in my project. It is called "EyeJack". With your mobile phone, when users place it on the drawing, small animation will trigger.
I wanted to make an AR book with my sketches. So when sketches are detected, short gif animation will play with different sounds that I've recorded in the Washington Square Park.
Also, for the sound, I recorded the ambient noises in the park. And I did some interviews with people who are reading books.
Somehow, I weren't able to figure out how to upload a gif file in Vuforia.(Unity) So I made an alternative for the interactive piece for now. When the sketch is detected, the sound and the 3d animation figures will trigger.