This app was mentioned in 2 comments, with an average of 1.50 upvotes
Peronio is an app that has the option of converting it to VR headset/Cardboard. It's basically a pop-up picture book and is interactive. It's a demo, so you'll need to pay to unlock the rest of the content. It's a very well done app with fantastic graphics/sound. I know you might be dealing with 16 year-olds, but it's a fun app nonetheless.
https://play.google.com/store/apps/details?id=com.ovnistudios.peronio
Seems good, I have no personal experience with it though.
https://play.google.com/store/apps/details?id=com.ovnistudios.peronio