These are a ready make selection of some of the most popular buttons from the Custom Toolbar Button Maker

Thunderbird, Postbox

Toggle Proxy

Toggle The Proxy On & Off

Toggles the Proxy between on and off for quick changing of networks.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Toolbars

Hide/Show Toolbars

Show and hide toolbars quickly and easily.

Toolbars use up valuable screen real estate, removing them frees this up to show more web page or email depending on what your doing.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

DOM Inspector

Document Object Model Inspector

Open the DOM (Document Object Model) Inspector to view and manipulate the DOM tree.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Error Console

Open the Error Console

Open the error console to view errors caused by scripts.

The error console is every developers best friend. Trying to find the line where you went wrong can be very hard with out so clue particularly in long or complex scripts. It shows errors from JavaScript, CSS, XML and even from the program itself should that be enabled.

If the error console is disabled, this button will, depending on its setting, open the "Web Console" or "Browser Console" which now serve the same function.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Extensions

Open Extension Manager

Open the Extensions Manager to install, uninstall or do any other needed tasks to any of your extensions.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Find

Find Text

Open the find bar to find a word in the current page.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Add-on Preferences

Open the preference window of an add-on.

Displays a submenu that allows you to open the option window for any add-on that has one.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Page Fonts

Toggle between the default and the sites fonts

Toggle between the use of the fonts used by the site and those that are set as the default.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Cookie Manager

Opens the cookie manager for the current web page.

Opens the cookie manager for the current web page. On middle click opens in a new tab.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Cut

Cut Selected Text

Cut selected text.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey