Hardware hacking is a new trend that involves people taking a piece of hardware, like a toaster, and enhancing it at home with new technology. For example, Scott Fullam redesigned his toaster to burn the words hot or cool onto the bread. Other items people like to hack include TiVo and the Xbox -- and just about any household appliance can be updated by adding a digital camera or digital display. Books available on hardware hacking are just starting to hit the bookstores.