Characterz - Biggest diverse mix and match 3D illustration library
Toy Faces Library - A fun diverse library of 3D avatars for your design mockups.
H A N D Z - Free 3D illustrations of diverse hands gestures
Humaaans - Mix-&-match illustrations of humans with a design library.
Khagwal 3D Illustration Library - Free 3D illustration library for web & mobile app designers
3D Flame Illustrations by Icons8 - Eye-catching 3D illustrations for kick-ass designs