Spun is a minimalist, responsive theme that puts the emphasis on your content; extraneous navigation fades away to put your words and images front and center. PLEASE NOTE: Version 2.0 makes some major changes, please upgrade at your own risk.
RoundTable - elegant, free P2 child theme for WordPress, that will make your internal blogging experience much warmer! RoundTable will encourage your team members to engage in open conversation. Please read readme.txt for a quick start guide, tips and tricks. Showcase your RoundTable site or mod at: http://mtomas.com/370/roundtable-elegant-p2-child-theme-for-your-companys-blog.
An original responsive theme suitable for any device and resolution. The theme includes three widget areas in the footer, one at the side and two on the top, with a slide on the top that is enabled with a check button in the post edit. In the home page, the post is displayed with only the title, image and eventual subtitle. Yuo can choose if display the logo of the site or a simple site name and site description.
A very neat child theme for Stargazer WordPress Theme (The most advanced theme ever crafted). The child Theme gives your site a whole different look. It also inherits all the awesome feature from its parent theme. Check out the live demo site here. You may find all documentations about the parent theme at ThemeHybrid and about the child theme at BlogSynthesis.
Houston is a child theme for p2, designed by the folks at WooThemes. It features a device-agnostic design so the layout responds to suit the browser, making it easy to stay up to date when you're on the go. Houston also introduces a handy new widget region beanth the post box and features integration with the "p2 likes" plugin.