Apparently the lightsaber is too small to fight against Stormtroopers, but if you want a unique way to organize your keys, the Star Wars lightsaber keychain flashlights will help you.
This is a pretty cool, officially licensed keychain flashlight themed by Star Wars. As shown in the images, the keychain flashlight comes in two different designs, the two flashlights are shaped as two iconic lightsabers that belong to Master Yoda and Darth Vader in the universe of Star Wars, and each lightsaber LED flashlight sports miniature design but features exquisite detailing. Just pressing the button on the hilt, you can activate the LED light instead of cutting blade for emergency illumination, moreover, the mini lightsaber is powered by 3 x LR41 batteries and comes with a key ring to keep your keys together.
The Star Wars lightsaber keychain flashlight comes in two designs and is priced at $14.99 USD. If you’re interested, jump to ThinkGeek for more details.