How to display node/add/sometype form on another page?

Question

The whole problem is following:

Lets say we have Items, Items can have Bids, Items can have Questions and Question can have Answer.

When an Item is displayed

Answer 1

To get a node edit form, you need to include node.pages.inc.

 $user->uid,
    'name' => (isset($user->name) ? $user->name : ''),
    'type' => $node_type,
  );
  // Invoke hook_nodapi and hook_node
  node_object_prepare($node);
  // Or you can also use an exiting node, for example
  // $node = node_load(123);
  // and the display the form:
  $output = drupal_get_form($form_id, $node);
?>