The BYTECC BT-200 USB2.0 IDE-USB Adapter lets you attach an external hard disk to your computer without bothering about niceties like an enclosure. Just plug the adapter into a USB port, slot the drive onto the IDE socket end and bingo. What? Oh yeah, software drivers, install, blah blah. $25.99. Funky, albeit a tad primitive. More here.
The USB 2.0 to IDE Drive Adapter implements a bridge between one USB port and one ATA or ATAPI based mass storage device port. The USB 2.0 to IDE Drive Adapter turns any IDE drive into a convenient external drive…The adapter supports all existing IDE/ATAPI devices such as Iomega Zip, CD-ROM, CD-RW, DVD-ROM and IDE hard drives.