Along with the millions of SA-BENT boards, I will add mine to the list,
First thing I've bent, took me a couple of evenings, I've built it for a friend. it really truly howls this thing, was fun to build.
I wanted to keep the speaker inside as I like the idea of portability, added a 1/4" jack output with a volume knob, added LTC1799 oscillator circuit and kept the original crystal so it's switchable, power crash, feedback and 5ths. Nothing groundbreaking, but I'm really happy with the final product, fits back together, is quite tidy, and it sounds awesome.
Took quite a while to get the oscillator set well, potentially there is a little more tweeking to be done there, but I increase the speed maybe 1/4 turn and then I get the full rest of the pot anti clockwise to slow it down, goes real slow. Power crash once again took a while to fine tune, but I get about 3/4 turn on that pot, nearly a full turn when the clock is real slow.