I don't even have a desk anymore.

But before I simply took 3 slabs of wood and arranged supports under them such that I maximized my leg room (could swing around with my legs out ant not hit anything).

It was just a standard desk that I modified to the right height and unscrewed the "legs" (steel legs that screwed in) and moved them around.

But my new "desk" is aluminum honeycomb that I custom cut to the right shape and it sits in front of me... sort of like a really big TV tray.