It's about time to retire the old-fashioned jumper cables in favor of other devices, like the Porta-Jump. Who wants big, gaudy cables taking up all of the room in your trunk when you can use this Rubik's Cube sized device to provide plenty of juice to a dead car battery. It comes fully charged and can fit in any nook or cranny of your car. Just plug it into the 12V DC outlet and fire up your car and make that stupid mistake of leaving your lights on all night just...go away.
The Porta-Jump is very compact, under three square inches. It comes fully charged and can recharge to jumping capabilities in 30 minutes. It is available for $20, plus it's an "As Seen On TV" product—so it has to be amazing! [JC Whitney via boj]