I was trying to think of the contraption I had around the house to do this.
It is a part of my KitchenAid food processor.
It doesn't make long ones but it works.
Another Idea may be this one.
http://us.microplane.com/microplanespiralcutter.aspx
Not a fan of the KitchenAid stand mixer attachments dont have any but not a fan for some reason.
For one they are pricey for what they do.