Vecteezy

A great collection of vector art – and you can modify it online before downloading!. Some art is not CC, but the majority of it is. Downloads include .jpg, .ai, .pdf, and .eps).

https://www.vecteezy.com/

“We’re proud to be the largest vector graphics community in the world. Here you can explore and discuss the creations of other artists from around the world, or just find that perfect little freebie for your next project. Vecteezy makes it easy to explore thousands of graphics created by vector artists from all over the globe. Most of the files are free to download and, depending on the license, free to use in your projects. We strive to offer you fresh designs that can be used to create your commercial or personal graphic design projects. We’ll save you the cheesy mottos and taglines, and let the content do the talking.”