LaCie and Porsche Design have teamed up to bring us this, the Porsche Design USB key that packs style and security into its diminutive frame. Coming in 16 and 32GB forms, you can pick one up now starting at $29.99, and lets be honest; it'll go great with your MacBook.
It's slim steel construction houses USB 3.0 support within, and comes with some pretty hefty security for your files. AES 256-bit encryption looks after things, and you're able to create a password protected area of the USB key to store anything that needs to be hidden from prying eyes.
Also with the Porsche Design USB key is a year of free cloud storage from Wuala. How much you get depends on the size of key you went for. For more and to order your own, check out the source link below.