Hi ,

To Create a menu item ,

• Create a directory within your module named static

• Create another directory named description inside the static directory.

• Make sure that your icon image is in 'png' format and named as : icon.png

• Place the icon.png file inside the static/description folder 

module_name/static/description/icon.png

In the XML where you define your main menu, add the web_icon attribute:

Then upgrade your module.

<menuitem name="My Application" id="module_name.menu_root" web_icon="module_name,static/description/icon.png"/>

To create custom icon use this site ,

https://android-material-icon-generator.bitdroid.de/

Hope it Helps ,

Kiran K

Hello.

Please look this module: https://apps.odoo.com/apps/modules/14.0/xf_dashboard/ 

This dashboard module allow create your own custom landing page for internal users (employees). 

There is the widget with tiles that allows to add links with icons.

In additional there is the widget with most used apps (based on user activity).