The PhotoFast CR-7200 looks like an ordinary CompactFlash (CF) card, but it's really a holder for those tiny microSD cards. The remarkable thing about it is, you can put four 16GB microSDHC cards inside, resulting in 64GB of flash storage, lashed together in a super-fast RAID-0 configuration.
This RAID-controlling mutha will be available next month for about $30. There's also a version that adapts a single SD card to CompactFlash, as well as a model that adapts a single microSD card to CompactFlash, too. Both of those will sell for about $25.
For those of us using CF-card-packing cameras such as the Nikon D300 or D3, this could give us a great way to use some of those extra microSD cards we have lying around, ganging together up to four of them for extra speed. Neat.