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Etch-A-Sketch toys have been around for decades, but people seem to continually find new and creative uses for them. This video is a good example. Angela Yuan, a former member of a Society of Automotive Engineers (SAE) Mini-Baja team, has come up with a clever Etch-A-Sketch clock. Based in part on the open source Arduino platform, it automatically flips to erase itself and redraws the current time every minute, as shown in the video.