If you're willing to tolerate not owning things when they're new, survivorship bias can be your friend. I especially recommend saying yes whenever an elderly relative / friend offers you a hand-me-down. You'll get things that are no good, to be sure; sometimes trash survives because people have inexplicably taken delicate care of it for decades. But often, you get things of great utility. Wool army blankets from the…
When inheriting or estate sales aren't an option I've actually been buying a lot of used stuff off of eBay lately. PC's (the trick is to select "no OS included" to find the business ones IT departments are discarding), a label maker you could use as a bludgeon in a pinch, a vintage flannel that's actually wool.
I've come to really like second hand. Clothes don't shrink when you wash them, boots are already broken in, and things have generally survived past that first failure spike that weeds out the lemons.