What about eight-tracks?
Ion Duo Deck Ultra-Portable USB Turntable with Cassette Deck
Still hoarding a stack of vinyl in your closet or a box of old cassettes in the attic? For those who've been meaning to get those relics converted to digital files, Ion sells a new portable system that does both. Considering how easy it is to transport, after you've converted all your old records and mixtapes, you can toss it into your backpack, go to your buddy's house and record all of his records. It's battery powered and even has built-in speakers. It retails for $79.99, but—just a hint—Amazon.com sells it for much less. www.ionaudio.com.