How good are you with a solder-iron ??
there is this dutch forum, where they had a lengty thread about making a cheap, but very usefull distortion-unit.. I bet if you made 2 of those, and replace the pots with stereo-pots
you get a reasonably cheap, but very cool distortion unit..
I burned my hands to much, trying to make it.. else i would have had sound-examples of my own..
google for "too many knobs" distortion unit. here is a result i found
for ya..
http://www.circuitbenders.co.uk/forum/index.php?topic=1571.0