first import

sites/all/modules/menu_token/plugins/menu_token_entity_context.inc

@@ -0,0 +1,44 @@
+<?php
+
+class menu_token_entity_context implements menu_token_handler {
+  function form_options($options) {
+    // Nothing to do here.
+  }
+
+  function form_submit($form, &$form_state) {
+    // Nothing to do here.
+  }
+
+  function form_validate($form, &$form_state) {
+    // Nothing to do here.
+  }
+
+  function form_alter(&$form, &$form_state) {
+    // Nothing to do here.
+  }
+
+  function object_load($options) {
+    $entity_type = $options['_type'];
+    $entity_info = entity_get_info($entity_type);
+
+    // Taken from entity_uri() to determine the uri callback for this entity
+    // type.
+    // A bundle-specific callback takes precedence over the generic one for the
+    // entity type.
+    if (isset($entity_info['uri callback'])) {
+      $uri_callback = $entity_info['uri callback'];
+    }
+    else {
+      return NULL;
+    }
+
+    $path = @$uri_callback();
+    $path = current(explode('/', $path['path']));
+
+    if (arg(0) === $path && is_numeric(arg(1))) {
+      return entity_load_single($entity_type, arg(1));
+    }
+
+    return FALSE;
+  }
+}

sites/all/modules/menu_token/plugins/menu_token_entity_random.inc

@@ -0,0 +1,38 @@
+<?php
+
+class menu_token_entity_random implements menu_token_handler {
+  function form_options($options) {
+    // Nothing to do here.
+  }
+
+  function form_submit($form, &$form_state) {
+    // Nothing to do here.
+  }
+
+  function form_validate($form, &$form_state) {
+    // Nothing to do here.
+  }
+
+  function form_alter(&$form, &$form_state) {
+    // Nothing to do here.
+  }
+
+  function object_load($options) {
+    $entity_type = $options['_type'];
+    $info = entity_get_info($entity_type);
+
+    $id =
+      db_select($info['base table'], 'e')
+      ->fields('e', array($info['entity keys']['id']))
+      ->orderRandom()
+      ->range(0, 1)
+      ->execute()
+      ->fetchField(0);
+
+    if ($id) {
+      return entity_load_single($entity_type, $id);
+    }
+
+    return FALSE;
+  }
+}

sites/all/modules/menu_token/plugins/menu_token_entity_user_defined.inc

@@ -0,0 +1,47 @@
+<?php
+
+class menu_token_entity_user_defined implements menu_token_handler {
+  function form_options($options) {
+    $output['menu_token_entity_user_defined'] = array(
+      '#title' => t('Entity ID'),
+      '#description' => t('The id of the entity that this token handler should load.'),
+      '#type' => 'textfield',
+      '#default_value' => isset($options['id']) ? $options['id'] : '',
+    );
+
+    return $output;
+  }
+
+  function form_submit($form, &$form_state) {
+    $options['id'] = $form_state['values']['menu_token_entity_user_defined'];
+    return $options;
+  }
+
+  function form_validate($form, &$form_state) {
+    $id = $form_state['values']['menu_token_entity_user_defined'];
+    $entity_type = $form_state['_menu_token_entity_type'];
+
+    if (!is_numeric($id)) {
+      form_set_error('menu_token_entity_user_defined', t('Entity ID should be numeric.'));
+      return;
+    }
+    else if (!entity_load_single($entity_type, $id)) {
+      form_set_error('menu_token_entity_user_defined', t('Entity should exist.'));
+      return;
+    }
+  }
+
+  function form_alter(&$form, &$form_state) {
+    // Nothing to do here.
+  }
+
+  function object_load($options) {
+    $entity_type = $options['_type'];
+
+    if (is_numeric($options['id'])) {
+      return entity_load_single($entity_type, $options['id']);
+    }
+
+    return FALSE;
+  }
+}