The Command Flash Enter Key is a USB flash drive that has a 2GB capacity. As the name suggests, the 2GB of storage and USB connector are embedded in to a re-used Enter key from a keyboard.
The Command Flash Enter Key can also be customised to give you more storage if needed. The creator over on Etsy just asks you to contact him prior to ordering to sort out pricing.
The 2GB model seen here costs $16 and is available now.