The schematic I used for this build was the BYOC Lil' Fuzz. The original 1960's Fuzz Face circuit uses Germanium PNP Transistors, which respond poorly to temperature fluctuations and are a pain to power since they require a positive ground and negative supply voltage. This BYOC clone is nearly identical to the original, except it uses Silicon NPN transistors instead.
Resistors:
Capacitors:
Transistors:
Potentiometers
Hardware: