Here is another interesting gadget, an Equalizer Music Hat that not only brings you music and also warm your ears and even react to the music you are listening. The Music Hat comes with a pair of sound reactive blue luminescent displays. As your music plays, the displays light up EQ style with the beat. The bars react to the volume of the music, lighting up more bars for louder music and fewer bars for quieter bits (turning your Metallica albums into something of a light show, no doubt).
The Equalizer Music Hat uses 3.5mm audio connector and needs two CR2032 batteries to work. It is priced at GBP19.99.