It can fit in the palm of your hand, but you'll be amazed with sound the Logitech Mini Boombox ($100) can produce. The Mini Boombox uses Bluetooth-enabled devices like smartphones and iDevices for music playback and boasts specially designed acoustic chamber to deliver great sound with enhanced bass that can easily wake up the neighbors. Other features include a backlit, control touch panel, handy speakerphone and mic to take calls, and up to ten hours of music playback.