Very cool. I am a total gear-head. I build primitive instruments out of cigar boxes such as guitars, amps, lap-steels, kalimbas, etc. and I modify electric guitars. I have several custom-made amps and guitars, so I have interest but no huge experience. I do, though, build small amplifiers out of cigar box guitars and cigarette boxes (they are only a few watts, run on batteries, and the speakers don't get much larger than 2.5 or 5 inches.
So, regardless, I'd like to follow this thread.
I know of amp builders that you could probably contact if you have further needs.