UK based EasyiShop offers the stylish BooM1 2.1ch Audio System for iPods.

The BooM1 is compatible with most iPods with a dock connector, including iPod G3, G4, G5, mini, shuffle, nano, video and U2. Besides the shuffle the BooM1 also charges the docked iPods.

Especially interesting is the design of the subwoofer, which looks like a helmet. With an iR remote you can control the iPod functions via the BooM1.
Other features of the BooM1 include amplifier and 3.5mm audio jack.

The measurements are of the BooM System are 402 (L) x 80 (W) x 57 (H) mm and for the BooM Box the measurements are 229 mm (diameter) and 232 mm (Height).

The BooM1 sells in the UK for £129 (~$) on EasyiShop.