There are several different types of antennas that you can build. The most famous Wi-Fi antennas are made from either a coffee can or a Pringles potato chip can. In this chapter you learn how to build your own antenna from a regular, metal coffee can. You will be able to build it quickly and cheaply. As an added bonus, you will have lots of coffee which will come in handy in staying awake for the other projects in this book.