It's never a pleasant thing when an old light bulb lights a room for the last time before going POP. An inevitable trip to the store ensues, followed by fumbling about on a stepladder or kitchen chair to replace it. It also means there's one more thing in the house that needs throwing away. I didn't imagine there were any uses for used light bulbs at all before coming across this video, however it completely changed my perspective. Take a look:
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