Deluminator
The Deluminator, also known as the Put-Outer, is a magical device from the Harry Potter series. It was invented by Albus Dumbledore and resembles a cigarette lighter. Its primary function is to remove or absorb light from any light source, which can then be restored with a simple click. This feature provides cover for the user, allowing them to operate in darkness if needed.
In the series, Dumbledore used the Deluminator on several occasions, such as when he left baby Harry Potter on the doorstep of the Dursleys. The device also has the unique ability to guide and apparate individuals back to their friends, as seen when Ron Weasley used it to return to Harry and Hermione after temporarily leaving them during their quest.
It's a small but significant object within the Harry Potter universe, symbolizing guidance, reunion, and the light that friendships can bring even in the darkest of times.