Why don't we use these?!
Clever 19th Century Automatic Candle Extinguisher

This is a short video from Youtuber Rescue & Restore, demonstrating the functionality of a 19th century candle snuffer, a device that automatically extinguishes a candle after it’s melted to a certain point. Pretty clever. And here I thought the only way to extinguish candles was to wait for the fire department to show up after they’ve started a proper blaze. If these were invented in the 19th century, where were they at my last apartment, and the one before that?