Clearly the KitchenAid mixer is itself a classic kitchen gadget. But you can pimp out the machine with some amazing affordable attachments.
The KitchenAid Citrus Juicer comes with a straining feature for smooth morning OJ. About $35, shopkitchen.aid.com
The KitchenAid Sausage Stuffer Kit makes sausage-making easier and manageable; it comes with two different thickness sausage options. About $14, shopkitchen.aid.com
(Over $50 but super cool and definitely worth mentioning are the Ice Cream Maker
, Pasta Press
and Ravioli Maker