Honestly, my favorite tool is just a cheapo chef's knife from Ikea or somewhere like that. I occasionally sharpen it with a slab of iron and use it for like 90% of all cutting I do.
Then there are a few robots I use: a kitchen assistant with a dough hook that makes all my bread with zero hassle (it also has two more accessories that can be used for example for flax seed mayonnaise), a "multi-cooker" (like a crock pot and a rice cooker in one) that I mostly use to make rice (and if I went back in time, I'd just buy a simple cheap rice cooker instead, but oh well) and, undoubtedly, my cheapo drip coffee maker. I hate brands so I just buy slightly-above-the-cheapest stuff, good enough so it doesn't break, but that's it. 90% it's good enough. I also have a cheap bamboo steamer basket that is slightly coming apart at the seams, but it's been great for a lot of things, from spring rolls to dumplings, seitan sausage and even steaming soy beans to make milk.
Oh, honorable mention to my tortilla press, though lately I've started to just use a rolling pin as that gets the tortillas thinner than with the press.
Also leather is just fucking uncomfortable lol. When I was a teenager I bought a leather jacket because it was COOL, but holy fuck it was so uncomfortable, I was usually sweating and freezing at the same time. Even when it comes to boots (which historically might have been necessarily made of leather to keep ppl's feet dry and warm, idk) we now have much better materials, and crying about microplastics is nothing but carnist cope
Not long after I went vegan, my dad tried to get me in a gotcha about leather, how faux leather is all plastic and REAL LEATHER is so natural and great. But, uh a) I don't use faux leather either, b) something like 95% of the cool real leather is cured with extremely toxic materials and just that pollutes more than any microplastic-laden shitty pleather would. He rebutts with "yeah but you can cure leather traditionally, without chrome, they do that in Italy (or some other country)", but had trouble answering which kind of leather he usually buys, seeing as the cool "enviromentally-friendly" (if you disregard the entire cow mass breeding part) kind is super expensive.