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While I applaud the author for making something from trash, this is NOT economical! I don't think a light or a fan makes sense when the purchased alternative costs about the same and lasts significantly longer. Around here 9v batteries go for about $2 a pop. For the same $2 I can buy a little AA flashlight that lasts 3x as long on a 50-cent battery. The same goes for the fan. I picked one up a few years ago from the dollar store. It uses two AA batteries for a grand total of $2 and I'll bet it runs 5x longer than the 9v equivalent. As far as the parts go, I have 9v battery clips I bought off eBay at 99 cents for 10. If you made minimum wage disassembling batteries you would lose money trying to disassemble 90 batteries an hour.That said, when I needed ONE clip I did take apart a 9v (to make the LED flashlight 12 years ago when such things were still a novelty item). It made sense considering the time it would take to order them and the wait 2 weeks to get them.
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