Very cool idea here: these $US29 X-Mini II speaker balls improve on the original X-Minis greatly: they can be daisy chained together for an infinitely expandable grouping of rock action.
Each X-Mini II has a woofer and tweeter (pretty neat for such a small package) and is powered by an 11-hour rechargeable battery, which can be re-juiced via USB. Daisy chaining happens via a simple 3.5mm headphone hack that can be tucked away below when you're not pairing it with others. And CNET Asia says the sound quality is pretty exceptional for a compact speaker. I want some—they should be available in March. [CNET Asia]