First up is a Fuzz Face clone with an external bias control. This allows you to smooth the fuzz out, or if you crank it, get an octave up effect when playing higher notes. The circuit board is a clone of the original Dallas Arbiter Issue 2 board for NPN silicon transistors. (The transistors I used were 2N2222s)
Here's a demo clip: http://snd.sc/11pMSpr
Next up is a clone of the Devi Ever Electric Brown fuzz. I used a layout I got from Tagboard Effects (awesome blog btw)
Pretty simple circuit, but holy cow does this thing scream. Used a Radio Shack enclosure that I proceeded to cut down into a wedge. Used a rattle can hammertone for the finish and some Fender-style amp knobs.
Here's a demo: http://snd.sc/11pMFm8
Lastly, I put together a clone of a version 1 Triangle Big Muff. Found a deal on a populated circuit board, so the only soldering I had to do was the off-board stuff. Graphics came out nice and it sounds really, really good.