check out these modular fx things!

[smnm]

http://thesquarewaveparade.com/parasites.html
they're intended for circuit benders, but some would be cool with guitar pedals, and have a lot of possibilities!
They are small, too...

TREMBLE - switchable squarewave / pseudo-random self-modulating pot replacement
QUIVER - variable shape square / triangle self-modulating pot replacement
SHIVER - pseudo-sinewave self-modulating pot replacement
DRENCH - variable resonant low pass filter
CONSTANT – analog voltage controlled shape variable oscillator
PARADE - six oscillator squarewave synth
POLLEN - analog noise generator
CLATTER - self-modulating variable speed optical switch
FALTER - voltage controlled digital squarewave oscillator
SHUDDER - variable shape square / triangle lfo
MIMEO - variable capacitance multiplier
SECRETE - high gain booster with switchable distortion

[Joe Kramer]

Hey cool link--thanks!