Fae - Design in Figma, publish as a React component via npm
Khagwal 3D Illustration Library - Free 3D illustration library for web & mobile app designers
UI Flow Cards - Construct web pages with ease, using cards
Shapefest - A massive library of 3D shapes for everything!
Wannathis - 3d illustrations and freebies
Humaaans - Mix-&-match illustrations of humans with a design library.