Here’s a neat piece of industrial design that Clay Moulton of Virginia Tech devised.

From the Virginia Tech News Article: “The electricity is generated by the slow fall of a mass that spins a rotor. The resulting energy powers 10 high-output LEDs that fire into the acrylic lens, creating a diffuse light. The operation is silent and the housing is elegant and cord free — completely independent of electrical infrastructure.”
The cordless part alone is enough to make the design interesting, but the idea that the unit itself could last over a hundred years thanks to high-tech LEDs is even more of an accomplishment.
Kudos!