Menu Item Extras provides extra fields for the Menu Items without using additional entities. This module is NOT an alternative of all Mega Menu modules - it is unique implementation of Drupal core’s Menu system.
All fields are placed upon the Menu Item edit/add form and use core Menu link content entity for storing all data.

Requirements:

This module uses core modules only.

Installation:

Download and enable as normal module;
Go to the menus list and edit menu which you want to have the extras.

Configuration:

You can enable/disable extras per menu, by default we enable extras for the Main Menu. When extras is disabled, all data from the fields are removed;
We added more suggestions for menus in regions. You could change menu template per region.
Like:
- menu--extras--main--header.html.twig
- menu--extras--main--footer.html.twig

Use cases:

Creating a Mega Menu using Layout Builder in Drupal 8
by Phaze2
Get a Fieldable Drupal Menu: Menu Item Extras Overview
by Lemberg
Drupal 8 Menu Item Extras Module
by Code Karate
How to Use the Menu Item Extras Module for Drupal 8
by OSTraining

Roadmap:

Join our Drupal slack channel: #menu_item_extras

RTBC issues for Menu Item Extras

Filters