Here is a cool use for all those old cassette tapes which nobody uses anymore, the Cassette Tape Lamp.
As you can see from the photos, the Cassette Tape Lamp is made from recycled cassette tapes, and they are all tied together to make a funky lamp.
The Cassette Tape lamp measures 22 x 22 x 20 cm and is bound to look good in your geeky apartment, if you want one they are available for 35 Euros, about $50 from OOO My Design.
Although from the looks of the photo it would be quite easy to make your own if you had a bunch of old cassette tapes.
