Corsair Flash Voyager 8GB Flash Drive for $6.99 shipped after this $15 rebate. Here is a screenshot for your reference. Note that the rebate is in the form of a prepaid Visa card. This drive is in a rubber housing and is supposedly designed to be shock and water resistant. Note that the purchase has to be made by 4/15.
Originally posted earlier, this deal has been revised and this is just a friendly reminder.