In 1996 when Lockheed Martin was shutting down its' Austin TX division, I was able to purchase a 5 leg, back tilt style swivel office chair with arms, for the ridiculous sum of $25 dollars. I welded up an offset bracket for the left arm, to use as a throttle mount location, and another bracket attached to the underside of the seat to serve as the joy stick mount. Currently those locations are filled with Seiko X55 components.
Admittedly the stick location does require care when one sits in or gets out of the chair, but functionally it works quiet well.