USB Flash disk

[SStrungis]

Most of those flash drives come formatted to VFAT off the shelf.  That 
way you can use them on PCs, Macs, and Linux boxen.  It's pretty much 
the only FS that works with all three major platforms.

Few Linuxes will natively mount them on your desktop.  You have to 
command line it something along the lines of:

mount -t vfat /dev/sda1 /mnt/flash/

where /flash is the rooted directory that you created beforehand.

Scott