D.A.M. Meathead Clone
Here is one of the earlier effects I built when I was just getting into this stuff. The D.A.M. Meathead.
I was looking for something dark and heavy, but nothing too complicated as I was still learning. For a pretty simple circuit, this thing sounds great.
I added a bunch of switchable caps to mine, so I have 10n, 22n or 43n for the input switch, and 22n, 69n or 122n for the output switch. The results range from a thin, lo-fi black metal sound to a heavy & thick sludgy fuzz.