Y-ball designer – Roger von Oech – is popularizer of creative thinking and speaker. The 30 pieces come with a 96 page booklet with samples and reflections on the benefits of creative thinking. You can check out other inventions by Roger von Oech – the popular Ball of Whacks, X-ball, Y-ball, Star-ball and others on the Creative Whack Company website.
![Y-Ball Y-Ball](https://buildkitpedia.com/wp-content/uploads/2023/07/Yball.jpg)