This looks pretty neat, a sensor that would be in the basketball to tell the user how there shots are. Its a kickstarter project and going to be around $60, and won’t get to you til next year. I might wait on this one.
http://www.coolest-gadgets.com/20130826/evo-basketball-instant-feedback-shots/
http://www.kickstarter.com/projects/shootersrev/evo-onetm-sensorized-basketball-performance-techno