a few days ago i ordered some stuff off of digikey (an online electronics components store) in order to make a guitar amp called the smokey amp, and theyll be arriving tomorrow.
it uses an extremely simple circuit involving an lm386 op amp to amplify the signals coming from your guitar. schematic below:
it has no controls on the unit, you just control it with the knobs on your guitar. apparently, they were sold in repurposed cigarette boxes. image below:
i dont have any of those, but i do have some neat little plastic containers im going to put some in. ill show yall the finished product once i make the amps tomorrow.