This one looks pretty useful for those of you who travel a lot, combining two items in one. The USB 4-Port Hub with Retractable Mouse Pad. As the name implies, it has a built in retractable mouse pad and a 4 port USB 2.0 hub.
It’s compatible with Windows, mac OS and Linux and measures 246 x 280 x 26mm. Some other specs include: USB 2.0 4-Port Hub, Fully compliant with USB 2.0 specifications, Backwards compatible with USB 1.1, and Built-in Blue LED backlight.