Check out a few tools, including shaders and generators, from Unity that will boost your workflow. 

Toony Colors Pro 2

Check out a collection of stylized shaders. 

What's inside:

• Shader Generator Tool: create your own custom shader choosing among dozens of features
• Hybrid Shader working with both the Built-in and Universal Render Pipelines automatically
• Desktop/Mobile versions of the shaders
• PBS Version of the Shaders supporting Metallic and Specular workflows
• Water Template: generate your own stylized water shader with depth-based effects, reflections, and more
• Smoothed Normal Tool: fixes broken hard-edge outlines
• Texture Ramp Tool: easily create ramp textures and see the changes in real-time on your materials
• Extensive and detailed documentation: take a look at the link below!

Wireframe Shader

Grab a new version of the wireframe shader from Davit Naskidashvili. 

• Fully compatibility with Universal and High Definition render pipelines.
• One node integration for Shader Graph and Amplify Shader Editor.
• Supporting meshes with 4 billion vertices.
• Runtime wireframe texture exporter.
• Faster script-side wireframe generation.
• Supporting Curved World 2020.
• Full source code included.

ShaderGraph Essentials

Upgrade your workflow in ShaderGraph with the essentials. 

• 30+ noises node
• generate a texture from any node in the graph (in editor)
• 3 additionnal master nodes (Unlit, SimpleLit, Toon) with more parameters
• custom lighting node so you can code your own lighting using HLSL
• water shader with vertex displacement (CPU / GPU) and dynamic foam

Poly Few | Mesh Simplifier and Auto LOD Generator

Check out a powerful mesh simplifier from Brain Fail Productions. 

• Mesh simplification, Automatic LOD generation, Mesh combining, and Material combining in one package.
• Supports mesh simplification on the fly with a powerful runtime API.
• Supports simplifying both skinned and static meshes as well as meshes with 16 bit and 32-bit index formats.
• Supports simplifying complex nested object hierarchies as well as objects with sub-meshes and multiple materials.
• Supports combining both Static and Skinned meshes. Even supports combining rigged Skinned meshes and or Skinned meshes with blendshape/morph animations.
• Combine Materials using Texture Arrays.
• mass generation of LODs for multiple selected objects at once.
• Preserves animations on meshes and texture mappings. Supports blend shapes animated meshes.
• Options to preserve UV Seams, UV Foldovers, and Border Edges.
• Allows preserving certain areas of the model up to specified levels, while simplifying the rest of the model normally.
• Packs everything in a convenient inspector window that pops up right under the components hierarchy.
• Visualize the changes before actually applying them.

World Composer

Grab a world composer for procedural terrain generation. 

• Elevation Heightmaps resolution of max 10 meter per pixel.
• Satellite images resolution of max 0.25 meter per pixel. .jpg/.png/raw format supported.
• Content-aware fills to remove shadows (for Day&Night Cycles), water, snow, etc. from combined raw images.
• Create huge multi-resolution terrains with different layers of detail.
• Split combined raw files into tiled images.
• Create terrains directly from exported areas with a click of a button.
• 3 different satellite image types, Aerial, Aerial with labels, and roads.
• Worldwide coverage.
• Convert ArcInfo ASCII heightmaps to 16-bit raw greyscale heightmaps.
• Create unlimited regions and areas and export any heightmap size or amount of image tiles.
• Export multiple areas at once.
• Scroll interface like Google maps.
• WorldComposer and Unity stay interactive while exporting.
• Exported heightmaps and satellite images can be used in TerrainComposer2.