Yes, because their ads are served on the same server (googlevideo.com iirc) as the actual videos. Blocking that domain would block the videos too.

A water kettle. Doesn’t have to be any fancy one, but it really fucking rocks for anything you might think of : want hot water for tea? No problem. Need hot water to steep something? No problem.

Most mid-range ones are insanely power efficient too, often being alot better than just boiling water on a stovetop, or using a microwave. And, depending on insulation, heat can be stored for over 6! hours.