More than just a detector, the NukAlert� is a "patented personal radiation meter and alarm." Small enough to attach to a keychain, the makers claim the device operates non-stop, and will promptly warn you of the presence of "unseen, but acutely dangerous levels of radiation." Supposedly, the performance has been verified by Nat'l Radiological Laboratory and each unit has been individually tested. It starts to beep like mad when you've been exposed to high levels of radiation, in which case you can just kiss your a - - goodbye.

$160.00 at NukAlert.

Via Uber-Review.