Sometimes it takes a little tough love to get your kids going in the right direction. For some, it might even take medieval love. That's where the Study Ball comes in.

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Simply put, it's a 20-pound ball attached to a shackle with a study timer that can be set for up to four hours. When the time has elapsed, the shackle will unlock. And no, this is not a concept—it actually exists. In fact, you can purchase one for around $115. Needless to say, you might have a Study Ball of your own after Child Protective Services gets wind of this. [Curiosite via FayerWayer via Newlaunches]