A lot of people make hardware store sabers which are fun. Just go to the hardware store, find pipes or tube and fittings and other crap that will look cool. That's what the prop guys did anyway (yes I know it wasn't the hardware store but you get the idea). Lightsabers are bathroom knobs, camera flashes and hand grenades.

As far as the blade, LED strip, clear tube and some light defusing material. You can find battery powered LED strips on amazon for like $10. Put the light defusing film in the clear tube add the LED's and there you go: blade that lights up. I'm over simplifying it of course, but you get the point.
Why can't you get a job?