Buy.com has the SanDisk 4GB Cruzer Micro USB 2.0 with Ready Boost for $14.77 with free shipping. Order one now.
I bought one of these a year or two ago. Works great, nice and small too. Plus the tip retracts so you don’t have to worry about losing the cover. My DVD player has a USB port on it, so I put one of the hundreds of illegally legally downloaded movies I have, and play it off the Cruzer.