This foolproof gadget being sold on Amazon is the perfect gift for parents who just want their kids to put their phones down at dinner.

It's a jail cell, with a timed lock, for phones. And for under $7, it's a pretty brilliant buy.

You can set a timer lasting 15, 30, 45, or 60 minutes, and if the "jail" is opened prematurely, an alarm sounds.

Cell Phone Amazon

We first saw the Cell Phone Jail on Twitter via Julie Ilkovich.
