I've added a couple of examples on my Blue Sky Workshop site. For a side project, a tool or button bar was required. So I decided I would come up with a simple responsive solution using CSS.
Here are links to what I came up with. The button bar seems to have turned out the best. It is very simple and auto wraps at any size. The tab bar looks good too, but does not wrap. I'm not sure either solution is perfect, but not bad for a first attempt methinks. Anyway, it was fun and easier than using a full blown HTML5 framework.