The Chant Bluetooth cheaper than some portable wireless speakers and its eco credentials mark it out, but sound quality isn't the best. If you're prepared to carry something a little larger, i-box's Twist sounds better and is ￡10 cheaper.

The Marley family of audio equipment (and the like) has summoned forth a coffee-cup-sized speaker that's able to connect to your device via Bluetooth or line-in, and it goes by the name Chant.