Instruct: Classify Amazon reviews into positive or negative sentiment
Query: How can you not like these things?

Not really an invention, per se, as stick-up battery-powered lights have been around forever. I remember my parents having one in their closet ca. 1975. What this is is a phenomenal implementation. It's tiny and floods a nice area with soft white/blue light: perfect for night trips to the bathroom. We have a couple stuck to the side of the toilet and under the medicine cabinets.