Iterating over several related theme mods to create both their settings and their controls.

foreach-customize-settings.php

// Icon Fonts:
foreach( ReactiveCustomizer::$icon_fonts as $slug=>$name ) :
	$wp_customize->add_setting( 'hn_icon_fonts_' . $slug , array(
		'default'	=> '0'
	) );
	$wp_customize->add_control( new WP_Customize_Control( $wp_customize, 'icon_fonts_' . $slug, array(
		'label'		=> __( $name, 'hn-reactive' ),
		'section'	=> 'icon_fonts',
		'settings'	=> 'hn_icon_fonts_' . $slug,
		'type'		=> 'checkbox'
	) ) );
endforeach;