It only takes a minute and four lines of code in a »mod_menu« override.

1. Add this four lines of code in »default_url.php« at the end (around line 68):

$document = JFactory::getDocument();
$renderer = $document->loadRenderer('modules');
$options = array('style' => 'none');
echo $renderer->render($item->alias, $options, null);

2. Create a new menu item

Menus: New Item

System Links » URL

and use anchor

#

for the Link*

3. Publish Module

Position: Type Alias of the menu item