The Mobile Spy Ear is first to be covered. All you need to do is pull it back so that the springs within will work up some tension, let it go and it will automatically head towards the direction you want it to spy upon. Definitely not the most discreet of spying devices, but you can't blame kids for having an active imagination.

• Works through Walls - Listen up to 50 Feet Away
• 2 Ways to Play: Roll it in [OR] Place it in a Room
• Includes Mobile Listening Bug, Receiver and Ear Bud
• Parts Snap together to Store or Clip into your Belt

The Mobile Spy Ear will retail for $19.95.

Source: www.shopwildplanet.com