And to get your hands on the sports equipment you need to eat loads of chocolate bars.
To get a basketball worth £10 you'd need to buy 170 chocolate bars, costing £71!
People against the scheme also say that you'd need to do tons of exercise to burn off all the calories you'd be scoffing to earn your free equipment.
But Cadbury's say that kids won't eat any extra chocolate, they'll just use the vouchers from the bars they do eat.
The chocolate makers added that they have £9m of sports equipment to give away in return for the wrappers.
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