The Native Union Monocle Speaker ($50) is one of the most flexible portable speakers around. The Monocle connects to your music device via a 3.5mm jack and can be held to your ear and used as a headphone or flipped around to be used as a mini boom box. If you need additional volume you can daisy-chain up to 10 of the speakers together. Additional features include a full duplex enabled microphone, a retro-inspired nylon chord, metal speaker grills and a volume control wheel on the speaker.
