I'd just move one of my 5 treadles out on the front porch and sew. Unless the weather is crappy that is.
Here's an idea. Remember the old bolt on generator powered lights we used on our bicycles eons ago? Hook one of them up to a treadle and put a battery in the circuit. As you treadle you charge the battery that runs the light.
No I'm not planning on doing that. At least not in the near future.
Joe