Bar code reader interface card and information system
Interface that allows appliances to connect to your smart cart bar code reader [=another idea in the Creativity Pool] to automatically set oven temps., cooktimes, and display mixing instructions based on data from UPC codes. This would also keep track of items you use and create your shopping list for you. Which you could fax to your grocery store ahead of time and then you wouldn't need the smart cart.
Reward: bump me off the landlubber list.