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When I was growing up I had a keen interest in the sciences. Mostly because of the cool gear that scientists used, you know, beakers, flasks, Bunsen burners that sort of thing. Well, not only did I not have the money for those sorts of thing but I had no idea where to even buy them if I could. So I had to improvise. One of the better improvisations I was able to do was to hollow out a light bulb and use it for other things.