Described by Forbes as a "floppy disk on steroids," the Iomega Zip Drive became an instant sensation upon its release in 1995. It was "inexpensive" (at just $150) and easy to use with Macs and PCs. Best of all: Its 100MB provided 70 times the storage capacity of a standard floppy disk. Today, for $19, you can get a 1GB USB flash drive like the SanDisk Cruzer Micro U3. USB drives give you a fresh set of security worries, but at least they'll never make you hear the "click of death," the now infamous sound that indicated a defective Zip drive.