Child's Play is built with the Responsive Base Child Theme for Thematic, which is a mobile-first approach to responsive web design. It is unique in that it is a SASS/Compass child theme, it is my first attempt at playing with CSS preprocessors. It includes all the benefits of the Responsive Base Theme, but incorporates WooThemes Flexslider, adds a header widget and has a much better visual appeal
It is intended to work best with the latest version of Thematic 1.0+, but works on 9.7.7 and above.
http://scottnix.com/themes/childs-play/
https://github.com/scottnix/childs-play/wiki
http://scottnix.com/childs-play-responsive-child-theme-for-thematic/
Anything to add? Improvements? Create an issue on GitHub.