![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_u02JHsXCcL7Znufs-m3hsb9QCuZkoijLRsPWraxck_Nmdrjus-SEmyVzCwsdtMetbcxh_SHb7NER6tHXe3ovOjGlDwbClzK1_Q4CvfDImvHinZ8POFdYMN-zVPZQ_ADFl6HQ=s0-d)
There's a bit of a breeze in my office due to the position of the building's ventilation system, so I made a pinwheel to monitor the wind speed. It gets spinning pretty fast at times.
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Maybe I'll hook up an electric generator to it during my lunch break. ;-)