lightbulbs
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Transform A Light Bulb Into An Oil Lamp, Corkscrew Or Solar Light
Most of us are, slowly but surely, getting rid of old incandescent bulbs and replacing them with LEDs and CFLs. If you have a few of those old bulbs lying around still and need a use for them, Instructables user ShakeTheFuture has a bunch of ways to repurpose them beyond throwing them away.