3dicons - 3dicons library offers beautifully designed open-source 3D icons.
Health Icons - Free, open source icons for any healthcare project
ICONZ - ICONZ is a premium icon library that offers more than 70 unique icons for all your products.
Black Illustrations - Free illustrations of people of color for your next project.
Wannathis - 3d illustrations and freebies
OLIO - Connect with your neighbours to share food and other things, rather than chuck them away. It’s fast, free, and friendly. Featured by the BBC, Wired.