Save energy and dry clothes outdoors – even on windy days! String a plastic-coated chain link between poles as you would a clothesline and put your clothes on hangers through the links.

Save the water from the dehumidifier and use it in your steam iron, machinery or car batteries.

Having a party and want a quick mixer? Cut out large puzzle-style pieces and give each piece to a guest when they arrive. They then have to find another guest with the matching piece.

Impossible Final Exams… from www.ahajokes.com

Civil Engineering: This is a practical test of your design and building skills. With the boxes of toothpicks and glue present, build a platform that will support your weight when you and your platform are suspended over a vat of nitric acid.

Computer Science: Write a fifth-generation computer language. Using this language, write a computer program to finish the rest of this exam for you.

Electrical Engineering: You will be placed in a nuclear reactor and given a partial copy of the electrical layout. The electrical system has been tampered with. You have seventeen minutes to find the problem and correct it before the reactor melts down.

Engineering: The disassembled parts of a high-powered rifle have been placed on your desk. You will also find an instruction manual printed in Swahili. In 10 minutes, a hungry Bengal tiger will be admitted to the room. Take whatever action you feel necessary. Be prepared to justify your decision.

Physics: Explain the nature of matter. Include in your answer an evaluation of the impact of the development of mathematics on science.