3D printer. At any moment in time I could just print something out and it would be ready by the time I finish eating. The possibilities are endless, plenty of free models online or just learn how to design yourself.
Edit: I currently use an Elegoo Neptune 4 Pro
Not for everyone obviously, but I developed a synthesizer habit some years ago, and right now is probably the best time ever for a beginner to get into it. Korg’s Volca series, Roland’s Aira compact, teenage engineering’s Pocket Operators, Arturia’s Microfreak, and Elektron’s Model series are all affordable and a great way for a beginner to start making some cool-ass music. Beware developing a habit though. It only stays affordable so long.
My espresso machine. They’re expensive. I do not know why they are, but they are. I hemmed and hawed for years about us getting one and finally decided fuck it. Im an adult, I want one, we can afford it.
In 2+ years the only times I have not made myself a cappuccino are when I have not been home to do so. It is one of my most used appliances. Espresso owns.