Laser saber - now available in a shop near you :}

'' Get ready to wield the world's first and only LaserSaber! A radiant saber pulsing with laser powered energy. The LaserSaber is energized by the awesome light of the S3 Krypton & Arctic handheld WickedLaser. Featuring an ultra smooth magnetic gravity system that can "power up" and "power down", the LaserSaber is the next evolution in harnessing pure laser power. ...
Do not participate in any form of fencing or swordplay. Fencing or swordplay will cause serious damage to people, pets or property.'' [source]

Of course you should not participate in any fencing with these laser sabers... unless you are a licensed Jedi warrior! :D