flaticon is a free project, created for and by designers and developers. Icons are provided as a webfont, png or svg.
Another nice lib to provide nice CSS transitions.
“Transit degrades older browsers by simply not doing the transformations (rotate, scale, etc) while still doing standard CSS (opacity, marginLeft, etc) without any animation. Delays and durations will be ignored.”
Magic is a CSS3 framework with many unique animations. Its simple to use and most of the animations are cross-browser.