Really Nifty Idea

In what seems like an endless search for all the "necessities" for college dorm life I came across this really cool gadget.  Totally frivolous I know and not really a necessity, but I bought it anyway.  Got home and tried it on a moving box - WOW - It's crazy how it works. Clarity and sound is amazing.  Actually might not make it into Jake's dorm box after all ...

  The more hollow the object the better the sound quality
  Works with ANY device that has a standard 3.5mm headphone jack: iPods, iPhones, 
  Droids, laptops, blackberrys, etc.  Size: 1 x 2.5 inches 

 Great On: Carboard boxes, appliances, coolers, drawers, cups, bowls, lamp shades,
 tupperware, file cabinets and much much more!

 Product Includes: Rock-It 3.0 unit with built in rechargeable battery, extra sticky pads, and a
 USB charging cable.