Hi guys I recently created a free asset to test shaders in a consistent environment regardless of the scene I am.
I am kind of old school and feel a consistent shading testing area is very comfortable to create different shaders.
The idea is that no matter what complex scene you are in, you can just bring this asset and then test render shaders on a tri light set up with background and env. light.
The asset itself is very flexible. multiple shapes test, and grid or plain background. You can even bring your own object or shader ball into the scene.
You can find the asset here:
https://www.orbolt.com/asset/Butachan::nh_shadertest::1.0
Please read the instruction as I made the asset object, light camera, and actually everything invisible in the scene so it doesn't really clutter the scene you are working.
I also made it open because as it is a render related asset I feel it will need some tweeking here and there to adapt to your needs.
Bests,
Nico.