Nice step by step info on putting building your own lightsaber unit. It requires no soldering, gluing or anything other than the following parts and everything is in the plumbing area of Home Depot:

Pop-up Basin Drain (1)
Drain extension tube with threads and slip nut (1)
Slip nut and washer (1)
1 1/4″ Disposal gasket (6)
1 1/4″ Slip joint washer (6)
Faucet hole cover (1).

Read the full step-by-step instructions

You’ve probably seen those, but if you did not. ThinkGeek is selling official reproductions of Lightsabers from Star Wars. Here are some of its features:

> Glowing blades ignites with realistic power-up/down effects!
> Authentic sound effects digitally recorded from the movie.
> Features four motion sensor controlled sound effects, Power-up, idle hum, clash, power-down
> Durable metal hilt looks and feels like a real lightsaber.
> Sturdy blade is permanently attached to the hilt
> Comes with a custom-designed display stand when you need a break from dueling.

[StarWars LightSabers at ThinkGeek]