I’ve got a real interest in simple interfaces and came across this recently.
Drop-in switcher for previewing minimal CSS frameworks
This is a quick drop-in CSS switcher to allow for previewing some of the many minimal CSS-only frameworks that are available. See the demo or drop the switcher into your own page to see how different frameworks would look together with your content.
I’m currently redisigning my website and will probably use one of these as a starting point.