EaZyMatZ is a FREE blender addons that allows to you add materials in a matter of CLICKS!
It currently contains 32 materials and more will be added in the future.
To add a material just click on the material you want and choose it from the material settings!
Now, when you click on download on github you will get a zip downladed (DON'T UNZIP IT)
Now This addon works with Blender 2.80 and up but the wood shader works from 2.83 only and up *WILL BE FIXED SOON!*