By David Goldman, Heather Kelly and Jose Pagliery @CNNMoney December 18, 2014: 4:10 PM ET
miCoach smart soccer ball, $200
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Adiddas' miCoach smart ball guides you through your workout, tracks your performance and teaches you how to improve your shot. The sensors inside the ball connect with a mobile app that displays real-time coaching tips -- including which bones you should be using to kick the ball.
