When I was a kid, I remember trying to use cup and string to eavesdrop on conversations and listen to things from afar. Today’s kids can forget the cup and string because there is the Sonic Sleuth. The Sonic Sleuth is a hand-held listening device that comes with a super sensitive mic and and parabolic sound collection dish that can pick up conversations and noises up to 300 feet away. The Sonic Sleuth also comes with a pair of headphones so that you can eavesdrop on convos in stealth. We’re sure that kids will be up to mischief with this gadget, we know we would. Educational Insights Sonic Sleuth retails for just $29.99.