The Rubber Band Trick - If you need to remove a nail, criss-cross a couple of rubber bands over the top of the hammer before using the hammer's claw. The rubber bands will protect the surface that you're removing the nail from.
Aluminum Foil as Fixture Protector - Protect doorknobs and hardware in the kitchen and bathroom when you're painting by wrapping foil around them to catch dribbles. The foil molds to the shape of whatever it's covering and stays firmly in place until the job is complete.
Buy the cheapest white vinegar you can find and common table salt. Dissolve as much salt in the vinegar as will dissolve. Make enough of this solution to completely immerse the item you wish to remove rust. When rust has been removed wash item in soapy water, rinse, dry thoroughly and oil.