Cheap and easy, day after Halloween got 2 different voice changers. One I put into a pedal case and changed to 1/4 " in and put, added 2 bend knobs. Works amazing with my APC. Other one I added screws to the case and wired them as bending contacts. A lot of fun. I'll try to post some video soon. Bends are easy and give more options.
did you make it on this scheme? click here