Wish List Module:

This module allows a merchant to place an “Add to Wish List” button along with the “Order” and “Checkout” buttons. The products are added to the Wish List for that customer and can be Emailed to a specified recipient. Wishlists are perfect for sites that attract a younger audience, who will have their parents or relatives purchase the items on their list for them.

Add the Inventory status module to create an online registry system. This is great for sites that sell a large number gift items.