source: extensions/EasyCaptcha/drag/icons/conf.inc.php @ 24215

<?php

// https://www.iconfinder.com/iconsets/ie_Bright
// https://www.iconfinder.com/iconsets/UrbanStories-png-Artdesigner-lv
// https://www.iconfinder.com/iconsets/crystalproject
return array(
  'house.png' => 'house',
  'ball.png' => 'ball',
  'battery.png' => 'battery',
  'bicycle.png' => 'bicycle',
  'binoculars.png' => 'binoculars',
  'book.png' => 'book',
  'calculator.png' => 'calculator',
  'calendar.png' => 'calendar',
  'camera.png' => 'camera',
  'car.png' => 'car',
  'cart.png' => 'shopping cart',
  'chest.png' => 'chest',
  'cookie.png' => 'cookie',
  'scissors.png' => 'scissors',
  'dvd.png' => 'DVD',
  'disk.png' => 'disk',
  'guitar.png' => 'guitar',
  'hat.png' => 'hat',
  'mobile.png' => 'mobile phone',
  'pencil.png' => 'pencil',
  'printer.png' => 'printer',
  'search.png' => 'magnifying glass',
  'shoe.png' => 'shoe',
  'suitcase.png' => 'suitcase',
  'trash.png' => 'trash',
  );