This plugin allows you to quickly add all of the materials in your scene to 1 single object.

Result:

Instalation

1. Download this as a zip file
2. Unzip it somewhere
3. Open blender
4. Go to preferences -> Addons -> Install
5. Select main.py
6. Done ✅

Usage

1. Select an object
2. Open context menu
3. Search for all materials

• Assing all materials -> Assings all materials to the object (before that it clears all the ones that were already assinged)
• Clear all materials -> Removes all assinged materials