We have seen a few of these watch USB drives before on Geeky Gadgets, the latest one looks more like a standard watch, so nobody will know you are carrying all your data in your wrist watch.
The Watch USB Drive comes with 8GB of storage and it features a retractable USB cable that is hidden in the watch strap, plus it it compatibile with Windows, Mac and Linux.
The 8GB Watch USB Drive is available for £20.26 about $34 from Chinavasion.