Here's something I'm pretty sure is unique -- a fuzz in which all the components on the circuit board are glass (except for a power filtering capacitor -- that simply didn't exist, and I didn't want it to sound like crap).
While I won't say it's the best sounding thing I've put together, it does have its own little bit of charm, with a vintage feel and super good cleanup (lowering the guitar volume sounds - forgive me - nice and "glassy."). The circuit could probably be improved if I don't have to stick to a very limited range of available components!
There's not much revolutionary going on here, but it does also have a couple things I've never seen before: a single diode provides feedback between the two transistors, and the tone control is a simultaneous bass and treble cut CCW for more of a midrange push.