There were many correct guesses to my mystery item from the October Theme Day. It indeed is a macro shot of a CPU heat sink for an Intel Xeon processor. They are made of solid copper and we do recycle many of the extras we end up with over time. The fan I used to add color is one I purchased from an online website. As the fan spins, the lights display a pattern. I would actually have to post a video of it to give you a better description, it's quite unique.