Build a TV Antenna from a Soda Can

Even though they're not expensive, it's never fun to run out and purchase an over-the-air antenna. If you're looking to patch one together on your own, Make user Rich Reynolds shows how to do it for less than $10 by attaching a soda can to a transformer
http://lifehacker.com/5888539/build-a-tv-antenna-from-a-soda-can