Sur La Table has a really nice list of FREE items that you can get when you register with them.  These ARE registration (not completion) offers.

Here’s what you can get for FREE:

 FREE $10 Sur La Table gift card when you Register for a KitchenAid Stand Mixer, Mixer Attachment and Blender

 FREE Fagor Expansion Kit when you register for a Fagor Pressure Cooker

 FREE Cut Resistant Glove when you Register for $49.95 or more of Microplane products

 FREE Wüsthof apron when you Register for $200 or more of Wüsthof cutlery

 FREE bottle of Boos Black Board Cream when you Register for $100 of John Boos Black Cutting Boards

 FREE Pop and Serve Popcorn maker when you register for $150 or more of Cuisinart products


PLUS they have a ton of Registry completion gifts as well!

See the entire list

Free Wedding Registry Gifts