The Roll-up Mouse Pad With Speaker + Hub is the latest hybrid device from those clever chaps over at Gadget4All.
This is a four port USB hub, a dual speaker and a roll-up mouse pad.
The ports means that you can connect to any other USB device but there's also a 3.5mm audio cable bundled with it to connect the mouse pad to your iPods, MP3 and MP4 players.
It is 280 x 220 x 40mm and weighs just 190g.
Here's some pics to show you what this weird gadget actually looks like.