I keep the sidewalk shoveled for pedestrians, and to cut down on shoveling I sprinkle dried leaves from my Western Redcedar between the house and garage, which works pretty well.
But for walking around town I like to use Yak Trax (Action Traction is another brand) - they fit over your shoe and have cleats for ice. I first saw this product when I was lying on the icy ground for the fifth time in ten minutes (we get ice storms in Portland that cover everything with a thick sheet of ice) and someone walked by, easy as you please. He was happy to help me up and tell me about his secret footwear. I have never fallen on ice since then!