Characterz - Biggest diverse mix and match 3D illustration library
Isometrica - 3D illustration constructor with 380+ isometric objects
H A N D Z - Free 3D illustrations of diverse hands gestures
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
Handy 3D Hands - Exceptionally fun 3D illustrations by Icons8