Exercise without jumping around.....????

2 weeks into a great start of diet and exercise, I have a stress fracture in my foot and will have to stay off the treadmill for 6 weeks at least. I am so bummed. I really, really need to keep exercising, but I am at a loss for what I can do that will go easy on my broken foot. Even the Yoga DVD I have involves moves that will twist and strain my foot. Your innovative suggestions would be great to help me brainstorm a new exercise program for the next 6 weeks.