How to create Guest Wishlist For Magento

Add to wishlist without customer login

Add three tables

CREATE TABLE `wishlist` (

`wishlist_id` INT(11) NOT NULL AUTO_INCREMENT,

`customer_id` INT(11) NULL DEFAULT NULL,

`shared` INT(11) NULL DEFAULT NULL,

`sharing_code` VARCHAR(50) NULL DEFAULT NULL,

`updated_at` TIMESTAMP NULL DEFAULT NULL,

`cookie` VARCHAR(255) NULL DEFAULT NULL,

PRIMARY KEY (`wishlist_id`)

)

COLLATE='latin1_swedish_ci'

ENGINE=InnoDB

AUTO_INCREMENT=0

;

CREATE TABLE `wishlist_item` (

`wishlist_item_id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT 'Wishlist item ID',

`wishlist_id` INT(10) UNSIGNED NOT NULL DEFAULT '0' COMMENT 'Wishlist ID',

`product_id` INT(10) UNSIGNED NOT NULL DEFAULT '0' COMMENT 'Product ID',

`store_id` SMALLINT(5) UNSIGNED NULL DEFAULT NULL COMMENT 'Store ID',

`added_at` TIMESTAMP NULL DEFAULT NULL COMMENT 'Add date and time',

`description` TEXT NULL COMMENT 'Short description of wish list item',

`qty` DECIMAL(12,4) NOT NULL COMMENT 'Qty',

PRIMARY KEY (`wishlist_item_id`),

INDEX `IDX_WISHLIST_ITEM_WISHLIST_ID` (`wishlist_id`),

INDEX `IDX_WISHLIST_ITEM_PRODUCT_ID` (`product_id`),

INDEX `IDX_WISHLIST_ITEM_STORE_ID` (`store_id`)

)

COMMENT='Wishlist items'

COLLATE='utf8_general_ci'

ENGINE=InnoDB

AUTO_INCREMENT=0

;

CREATE TABLE `wishlist_item_option` (

`option_id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT 'Option Id',

`wishlist_item_id` INT(10) UNSIGNED NOT NULL COMMENT 'Wishlist Item Id',

`product_id` INT(10) UNSIGNED NOT NULL COMMENT 'Product Id',

`code` VARCHAR(255) NOT NULL COMMENT 'Code',

`value` TEXT NULL COMMENT 'Value',

PRIMARY KEY (`option_id`)

)

COMMENT='Wishlist Item Option Table'

COLLATE='utf8_general_ci'

ENGINE=InnoDB

AUTO_INCREMENT=3

;

..........................................................................

After That :

edit - app/code/core/Mage/Wishlist/controllers/IndexController.php

Replace these functions:
protected $_skipAuthentication = true;

 public function skipAuthentication()

    {

        $this->_skipAuthentication = true;

        return $this;

    }

 protected function _getWishlist($wishlistId = null)

    {

        $wishlist = Mage::registry('wishlist');

        if ($wishlist) {

            return $wishlist;

        }

        try {

            if (!$wishlistId) {

                $wishlistId = $this->getRequest()->getParam('wishlist_id');

            }

            $customerId = Mage::getSingleton('customer/session')->getCustomerId();

            /* @var Mage_Wishlist_Model_Wishlist $wishlist */

            $wishlist = Mage::getModel('wishlist/wishlist');

            if ($wishlistId) {

                $wishlist->load($wishlistId);

            } else {

                $wishlist->loadByCustomer($customerId, true);

            }

            if (!$wishlist->getId() ) {

                $wishlist = null;

                Mage::throwException(

                    Mage::helper('wishlist')->__("Requested wishlist doesn't exist")

                );

            }

            Mage::register('wishlist', $wishlist);

        } catch (Mage_Core_Exception $e) {

            Mage::getSingleton('wishlist/session')->addError($e->getMessage());

            return false;

        } catch (Exception $e) {

            Mage::getSingleton('wishlist/session')->addException($e,

                Mage::helper('wishlist')->__('Wishlist could not be created.')

            );

            return false;

        }

        return $wishlist;

    }

Solved :)