If it's on a flexible cord like a regular (nonindustrial? consumer?) machine's is, just put it on the floor. If you're using the cutout platform idea, you'd need to have the cutout big enough for your feet anyway.
The only issue would be if your cord weren't long enough to reach the floor, but cords can be replaced. It's not even all that difficult, usually. They are expected to wear out eventually. Or you could put it up on a slanted block so the back, where the cord attaches, is higher off the floor but it's still easy to push with your heel resting on the ground.