Also, some proprioceptive exercises can really help the ankles, and the great thing is that you can do them while you're doing other things. Stand on one leg to wash dishes, fold laundry, etc. While you're watching TV or sitting at your computer, write the alphabet with your foot.

Once you "graduate" to tougher balancing exercises like one-legged squats, gymnast's scale, closing your eyes, and/or moving your upper body around while standing on one leg, it takes a little more attention; but it doesn't need to take a lot of time. Five minutes a day working on balance can make a world of difference in ankle stability.