Cassettes aren't the most useful way to store your music, but the form factor still has its share of nostalgia-smitten admirers. So why not keep the form factor but ditch what made it so limiting?
The Funkyfonic Cassette MP3 speaker is a speaker designed to plug into your MP3 player that's shaped like an old cassette. For only $22 you can make the cassette relevant again, at long last. That seems like a pretty good deal to me.