For me, it’s an electric toothbrush. It doesn’t matter if you go with Sonicare or Oral-B, once you start using an electric toothbrush, regular toothbrushes don’t ever feel like they clean your teeth properly. The smooth plaque-free top layer of your teeth that you can feel after using an electric toothbrush can’t be replicated with a regular toothbrush.
Electric brew kettle for homebrewing. It’s soooooo much better than using the standard kettle on the cooktop. Don’t have to monitor the temp manually and watch the clock, just turn it on, set the temp and timer and it does its thing.
Also can be used to sous vide an entire 10kg ham