Spree Wishlist extension
The Spree Wishlist extension enables multiple wishlists per user, as well as managing those as public (sharable) and private. It also includes the ability to notify a friend via email of a recommended product.
Add the following to your Gemfile gem 'spree_wishlist', :git => 'git://github.com/spree/spree_wishlist.git' gem 'spree_email_to_friend'
To setup the asset pipeline includes and copy migrations run:
rails g spree_wishlist:install