Sound:
Boot: First few notes from the Fallout 3 theme, or some quote from Liberty Prime.
Activation: Grinding/beeping sound from VATS being activated, typical saber activation blended with intense geiger counter clicks coming in halfway through VATS sound.
Hum: Slightly higher pitched hum, with a constant geiger counter clicking.
Swing: Typical swing, with more intense geiger clocking mixed in.
Clash: Sound effects from the Plasma rifle.
Deactivation: Geiger clicks fade out, VATS grinding again mixed with typical deactivation.

Saber:
The Blade colour would obviously be green.
I'd model the actual handle off the Pip-Boy. I'd want to create some long flat surface and have the activation switch be a dial.

I'm thinking for that, I could take a 4-inch double female grooved or fluted(one of the thick ones), have the curve milled off one side, put a fake LCD screen in there with an accent light behind it that would illuminate a pip-boy like screen when activated.


This would probably not get made for a couple years, as I don't have the cash or experience, but I wanted to talk about the idea. I'd love to see if someone ever would use this idea.