Multi axis foot pedals?

[Grant Richter]

One of my buddies who is a guitar player recently got
a modular synthesizer to process his guitar with.
He asked me to help him come up with a controller
he can use on stage without taking his hands off the guitar.

It seems to me that one of the pedal manufacturers
used to make a multi-axis foot pedal.
(like a joystick for your foot?)

I can't remember if it was tilt and twist
or back and forth and side to side?

Any one ever seen anything like that?
MIDI is not required just CV.

I know Bob Moog is offering nice plastic
single axis foot pedals for $40 to use
with the MoogerFooger modules.
I thought I would try to hack something
up, using that as a base.

Just fishing for wacky ideas, if anyone cares to share.

Thank you,

Grant