Ive really been getting into techno music, and i didnt want to spend 150+ on a talkbox, so i made my own! and it sounds really amazing.
http://www.instructables.com/id/Build-a-Talk-box-inside-a-Toilet-Plunger/
all you need is this stuff
A pair of mid range powered computer speakers.
A 4 ft 1/2 inch diameter vinyl hose.
A Plumbing Cap from Home Depot (the one I used was a Nibco 5817 ABS DWV Plastic Plumbing Cap that was just a little larger than the naked speaker).
A Rubber Toilet Plunger (I've used both a red and black plunger and they both work fine, you want to make sure that the plumbing cap fits inside the plunger very tightly and that no air escapes).
A Roll of duct tape
A musical instrument to plug the speakers into.
And Finally basic tools for disassembling things... screw driver, Pliers etc...
It says you need a soldering iron, but you really dont, he just added an extra step that is not needed
it was really easy, cost me about 5 bucks, and the results are totally worth it.