A Shabbat lamp is a lamp built with movable parts that can expose or block its light, so that Shabbat observant Jews who accept this method can make a room dark or light during Shabbat and Jewish holidays without actually switching the electrical power on or off, an act forbidden under Orthodox Jewish law on those days. Versions made for children, styled for example as a teddy bear, hide the bulb behind a rotating shell rather than requiring any switch to be touched.
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