A sheet of aluminum foil and a little science can help you polish tarnished silver. Line a pan with foil, fill with cold water, add 2 teaspoons of salt and your worn-out silver. Three minutes later, remove your gleaming silver, rinse and dry.
Foil can also help you save money on your gas bill in the winter by improving your radiator efficiency. Mount a sheet of foil behind and to the sides of your radiator to reflect heat away from the walls into the center of your living space, if you don't mind having shiny silver walls for a few months.
Aluminum foil can help you clean grill grates. After you finish cooking, while the grates are still hot, drop a sheet of foil on top and close the lid. Once everything has cooled down, remove the foil and scrub the grates with a grill brush. Your cooking surface will be good as new.
If you don't have a wire brush, wait until the grill and foil have cooled completely, crumple up the foil and get to scrubbing. The foil actually works better than a wire brush on some thicker grill grates.
Dinner party hosts and hostesses, rejoice! You can keep your freshly baked bread and dinner rolls hot throughout the meal by slipping a sheet of foil into the bottom of your bread basket. If it's under your fancy cloth napkin, no one will be any the wiser.
Here's another genius kitchen tip. If you're always at a loss for how to dispose of used oil, crumble a piece of foil into a bowl shape and pour the oil into the foil. Once the oil cools and hardens, crumble the foil with the oil and throw it all away.