ctools_custom_content.module

<?php

/**
 * Implements hook_menu().
 */
function module_menu() {
  $items = array();
  
  $items['foo'] = array(
    'page title' => 'Foo',
    'page callback' => 'foo',
    'access arguments' => TRUE,
  );

  return $items;
}

/**
 * Page callback; This is how you can add css/js in the page callback not matter
 * what is returned.
 */
function foo() {
  drupal_add_css(drupal_get_path('module', 'module_name') . '/css/module_name.css');
  drupal_add_js(drupal_get_path('module', 'module_name') . '/js/module_name.js');
  return array(
    'whatever'
  );
}