- Mechanical keyboard: Splurged a bit on a keyboard after going through a bunch of membrane keyboards early in my career. My current keyboard has been up and ru

- Mechanical keyboard: Splurged a bit on a keyboard after going through a bunch of membrane keyboards early in my career. My current keyboard has been up and running for nearly a decade and shows no signs on wear and tear and I expect to have it running a few decades from now as well. - Cast Iron cookware: This is on the opposite end of the price spectrum, since cast iron cookware is (usually) quite reasonably priced (and maybe even cheaper) compared to really fancy cookware, but I'm quite religious about maintaining my cast iron cookware, and I expect to be able to keep using it as a stable cooking equipment for all sorts of cooking for a few decades more at least. - Safety razor for shaving: This is a bit sentimental, but when I turned 18, my father gifted me an old-school safety razor for shaving, as a kind of "Welcome to adulthood" gift. I've used it for over a decade now, and despite having a modern electric shaver, I do find myself going back to the razor every now and then, and expect to use it for a few more decades. Yes, it needs fresh razor blades, but the safety razor itself is as sturdy as ever.