Google Cardboard

Interesting!!
You only need a cardboard and an Android phone, you could start to develop VR!

Ref: https://www.google.com/get/cardboard/get-cardboard.html

J.K. Rowling Speaks at Harvard Commencement

It shows not only her knowledge but also her sense of humor!

Touch Board: Interactivity Everywhere

I like the ring bell part!