Here’s a multi-purpose gadget for you from Gadget4All.com. This roll-up mousepad also has a 4-port 1.1 USB hub. It also has two speakers that can be connected to an mp3 player using the included 3.5mm audio cable. The speakers/hub are powered with the included USB cable, but it appears there is a connector if you supply your own AC adapter. The Roll Up Mousepad with Speaker + Hub would make a compact addition to your travel kit. It’s $22.00 at Gadget4All.