Sometimes all we need to do is look to the past for solutions. And it doesn’t get much more old school than the ball and chain. Let’s face it, getting kids to study is hard, but attaching a ball and chain to their leg is easy.

The study ball is a real 20 pound ball and chain with a timer. Just set how long you want your kid to study and attach the device. When his or her time is up, it will unlock, not before. Then they can leave their room.

This might be a good way to get them to clean their room too. It can be set for up to four hours, so it will definitely motivate them to do whatever you want.

[Gizmodo]