Is there a way to add "Show Invisibles" icon to Formatting Bar? Toolbar?

I find myself turning Show Invisibles on and off frequently when cleaning up text, etc.
Couldn’t find a way to add an icon to the Formatting bar or Toolbar. Is this possible?

I know I can create a keyboard command, but with 18,251 other keyboard commands to remember for all my Mac apps, a simple icon would be greatly appreciated :slight_smile:

There is. Right-click the toolbar >
Then click done at the bottom of the customization panel.

Damm, I looked and missed it the first time.
Tired eyes…
Thank you.