Keep an eye on Freecycle in your area - you never know when an elliptical machine's gonna need a new home!
I don't, but I should get back in the habit - I have a stationary bike that I can use. Elliptical machines and treadmills are awful, scary beasts - they either throw me off, or tangle my feet, but the stationary bike I can stay on long enough to actually benefit from. I have half the sense of balance that a normal person has, so I kind of need to hang on when I work out!