I remember a short while back people were talking about the little footswitch controller for the MFs. Here ia an optical beam that you can use to control MF parameters. Pardon if this has been posted before.
I don’t know If i can imbed this video so if it doesn’t work, just follow the youtube link at the bottom of the page.
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http://www.youtube.com/watch?v=feEZziPdpOQ
Interesting application, but an expression pedal will accomplish the same result with the added benefit that the pedal will stay at the last position, whereas the photocell will always return to its default when you move your foot away.
Still cool, though. 
I hear you, but I think this also makes it cool for quick on off stuff combined with seeps. purdy cool.
i didnt watch the video yet cause it will probably take 4 hours to load, but i do have an Effector 13 PEEP to control my moogers. and i most say it is awesome. put a police becan or strobe light in front of it and have yourself a crazy ass time. i like to use it on my ringmod in the freq input. strobelight + moving hand or foot down + delay = pseudo “Baba Oreily (Teenage Wasteland)” Intro 