Free Blender Brushes // IK3D - YouTube
"Blend Swap is the place to find and share blends with the entire world. You make awesome blends, share them in the biggest repository of open source 3D models made with the awesome Open Source 3D suite Blender."
Camera - Wolf
The best source of affordable, high quality, high resolution environment maps.
Blending Jacob: Material Library
[NodeGroup] Blender Nebula generator node group https://blenderartists.org/forum/showthread.php?415493-Addon-Space-Nebula-Group-Node
crazyrobinhood | creative commons illustrations
PBR Materials 2