Introduction: Making a Light Saber
2 Any color LED's you want
A box with a lid with a hole in its middle
Step 1: Making the Light System
Take the battery and attach a switch to it and then connect it to the LED and then connect the other end of the battery to the LED as well.
Step 2: Finishing the Product
Take a piece of paper and roll it into a tube and cut a small rectangle for the switch and then put the lighting system in with the LED in the middle and the switch in the rectangle hole.
Turn the switch on and voila your own cheap lightsaber.
You can use any color LED you like.