Hi! I have tried several examples and decide to make one library file for common materials and similar parts like figure postament. The figures might be in different scenes/collections of another file.
Blender is so flexible.
You can store all your basic shapes in a Collection and blend file.
You can store your most used textures in a blend file.
Then save it as the blender startup file.
Each time you start Blender you have your tools immediately available.
But this trick can increase your blender file massively.
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