We all remember the wired guns that would come along with those TV video games in the '90s and are (probably) still available. And now with the advancement in technology (notably with the invention of the Accelerometer), those classic shoot-em-up moments can be rejuvenated with the Wii Zapper.
The Wii Zapper is basically an add-on to the Wiimote of the Nintendo Wii gaming console. Colored in white to match the Wiimote's shade, the Wii Zapper's design resembles a sub-machine gun or the classic 'Tommy' gun popularized by the GodFather movie. The Zapper doesn't have any electronics on-board; rather it docks the Wiimote on its top for its functionality.
The Wii Zapper is designed for that perfect shooting-spree experience. It retails for USD 20 and includes the 'Link's Crossbow Training' game.