Created by Japanese art director Masashi Kawamura, this Rainbow in your Hand flipbook has printed a picture of the color spectrum in each of its 36 pages with black background, creating an illusion of a floating rainbow over these pages when are passed quickly.
Do you want to see it working?
You can get one of them at Stereohype. Your kids will love to be able to have a little rainbow in their hands.
- via: Swiss Miss