9. Cathode Ray Tubes
In the United States, the venerable 'boob tube' has all but disappeared from offices, living rooms, and retail shelves. Yet more than 90 million CRTs were sold last year, says an MIT report--almost all of them to Asia and Latin America.
Why? Because they are both durable and cheap, and--guess what?--they still offer higher-quality pictures than LCDs and plasma sets, according to the image calibration experts at DisplayMate. Also in high demand: old, discarded CRTs, because their lead-lined glass is needed for manufacturing new ones.