I was looking for a new external drive, as my photo editing computer was running out of space on its internal drives (I was resorting to storing files on my scratch disk!) and my old external drives were pretty much full, too.
Went shopping around, looking at what is available where I live; and while pricing various options, I happened to notice a selection of drives in little boxes hanging on display hooks, instead of in regular sized boxes on shelves.
They were by Toshiba; and having heard very good things about their notebook computers, I picked up one of their 1 T external drives.
It is smaller than a pack of cards (well, slimmer but a bit taller and wider); and with only the USB cord (no power supply) and no vent holes or heat fins, I quickly realized that it is a flash memory drive.
Pretty nice - no moving parts to wear out, so I can use it to archive image files and then have my standard disk drives for files I will be editing and re-saving, or moving around as I work on projects. Someone in another thread here mentioned that flash drives wear out if used over and over with material that is erased and re-written all the time; but for storing RAW files in NEF format, this seems to be exactly what I have been looking for: so much so that, I expect I will be purchasing several more!