exercise alternatives during healing...

i finally went to get some pain checked out today, and the dr is almost 100% sure it's a stress fracture. he told me no power walking and no running (my main exercise) and also no elliptical. does anyone have any exercise suggestions while i heal? i can't afford to be stagnant while i wait for this to heal, but i'm not much of a bike rider; and i don't really have access to a pool, although i'm checking that out. thanks!