As one of two new MiJam series iPod-compatible toys from BlueBox (aka b2), the MiJam Mini Keyz combines 8 synthesizer-style keys and simple drum loops to add musical notes and beats to an iPod's audio. One cable connects to your iPod's headphone port, the other to an included speaker so you can hear your combined music out loud. A headphone port lets you work in quiet, or connect a recording device (not included) to preserve your playing. Mini Keys'…