This package includes a blend file containing a variety of useful materials for Blender.
Add this file to one of your asset library folders to be able to drag them into your blend scenes using the asset browser. Check (Edit - Preferences - File Paths) to create and manage new asset libraries.
You can also append the materials from the file directly by using File - Append.
The content of this pack is governed under a CC0 license, meaning you are free to redistribute them in your own projects, both commercial and non-commercial. Credit to the pack is always appreciated.