Maybe this will help. This is my metal lightsaber built mainly from plumbing parts. It can be done in just a few minutes assuming you can find these parts.
It cost about $20.
VOTE please if you like it!
I was inspired by this Instructable:
Here is the parts list:
1.5" Slip nut:
1.5" Faucet hole cover:
Masking tape or similar
Black duct tape
Motor or rotor from hard drive
There isn't really a good way to do this without standing in the store and putting stuff together to see what you think looks good. I'll admit, I stood in the plumbing aisle for a while doing this, and the plumbing clerk thought I was crazy (but never asked to help. Fear? lol). If you like this design and can find these exact parts, then you might can skip dry fitting most of it in the store.
Step 1: Drain assembly
The rubber one will give the pipe extension a place to but up against.
Screw the metal washer all the way down to the lowest threads. This will make your saber as long as possible.
(If you want it to be longer, use the 12" extension. I went with 6" because it was long enough for me and I didn't feel like cutting metal)