I just love DIY mods! Check out Frank Vanaman's custom rackmount processing module (title links you there). Click the image for a nice high rez picture!
"The Wersivoice. By its name you might expect it's something made by Wersi. You'd be right! Wersi made this processor for two basic functions: rotary speaker simulation, and chorus/ensemble effects. I picked up a spare Wersivoice card from an organ that was being parted out, and put it on a board with a power supply."
Very nice work, Frank!