A 40 megabyte USB storage device with a rechargable battery that just so happens to play a wide variety of audio formats. Made by Iomega, uses PocketZip disks.

Especially handy if you have a recent PC or a Mac newer than an iMac. As this device conforms to the USB Mass Storage Device spec, it can be used as a boot device. 40 megabytes sure beats the heck out of a 1.44 megabyte floppy disk as far as rescue disks go.

In fact, expanding upon that, the entire base system for Debian Potato is small enough to fit on one of these disks, as well as any critical files from /etc or /var. Now you too can restore your operating system from an MP3 player!

This also shows why physical access to computers is usually the greatest security hazard. USB is everywhere, and this makes for a dandy tool for booting a computer you want to 0wn if it has no floppy. But I wouldn't do a thing like that.