Stuff that can be achieved using just 1 range input.
WARNING: MOST DEMOS ARE NOW BROKEN!
Disclaimer because some people got the wrong idea: I did NOT design these sliders. Whoever knows me is probably aware of the fact that I'm 100% technical and 0% artistic. Me trying to design stuff would result in something that looks like a cat that's been washed in a washing machine puked it. I just googled "slider design" and tried to reproduce (as well as I could) the images that search found.
Also, most of them are NOT CSS-only, even though they have functional and decent looking fallbacks for the no JS case.