4. The Radio Hat

Why carry a radio when you can wear one? In the 1940s, inventors released a fedora with built-in AM radio. Antennas stuck out the sides like robot ears, and it required batteries that made your head feel like it weighed 40 pounds.

It didn’t take off—probably because people realized it made them look like a lost extra fromThe Jetsons. Still, it’s the granddaddy of wearable tech. Today’s AirPods owe a weird, wire-covered debt to this dapper disaster.

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