Evil Mad Science Evil Mad Science ISP Shield Kit for Arduino
The Evil Mad Science ISP Shield 2.0 is an Arduino add-on that lets you use your Arduino (or shield-compatible clone, such as the Diavolino) as an AVR ISP programmer. This can be used to burn bootloaders onto "raw" AVR chips, directly within the Arduino programming environment, either in the provided ZIF socket or on an external target board. You can read more about this process here. The Arduino+ISP Shield combination is a full-fledged AVR ISP programmer, capable of programming any AVR microcontroller that has an ISP programming interface.
Evil Mad Science ISP Shield Kit for Arduino