Found someone making a 'mech cockpit from an exercise bike
. I don't think the seat looks all that comfy, but at least the bike provides not only the seat but also support structure for the rest to bolt onto.
Edit: Okay, this one is nuts:
Want to improve your game? The best thing to buy is more paint and more field fees.
I can't dumb it down to your level because I'm scared of heights.
A shark is an animal that dies if it stops moving. My feedback