There is this this new storage device for digital photographers.
It's called "EZDigiMagic"
It's a great solution for many photographers. It is basically a CD burner and card reader that has a one button operation to copy the card contents onto a CD. The added bonus is that it is completely dependant and can be powered by an AC adapter or 4 rechargeable AA batteries. (No more taking your laptop to copy files to)
So, with this device, you don't need multiple memory card/mirco drives. At about $270, it is also a great tool for making CDs directly from your memory card.
More info can be found at: http://www.ezdigimagic.com
I haven't used one yet, but if I get the chance to, I will report on how well it works.