A Look at Excessive Portable Storage
Tom's Hardware has an interesting look at portable storage devices that fall a little outside of the normal bell curve. The reviewed items include Buffalo's all-flash portable storage drive, Chaintech's flash SSD w/ an additional USB port, and LaCie's state-of-the-art RAID drive based on two 2.5" drives. LaCie's drive seemed to come out on top for usability and performance with the main downside being the $600 pricetag and lack of adequate backup software, but all had interesting advantages.
Do you mean USB sticks with little write-protect tabs like floppies? They do exist, you know - I have one somewhere. Admittedly it's a bit old and thus only 128MB, but the functionality is there nonetheless.
A quick bit of Googling reveals that PQI still makes them in more useful capacities, and that they retain the write-protect tab. They're even still the same colour!