I still use my father's Solingen folding scissors which I can't imagine how many decades old they are. My father wore the same shoes for half a century and used the same container of talc powder for a couple of decades. The heaters in our home were old-school things that had no parts that would wear out at all, except a light-bulb in the back to give the "warm glow" effect as the elements were not visible.
For now, I own two pairs of Danner shoes, a bunch of Letherman tools and Victorinox Swiss Army knives. I still use quite a bit of clothing I bought around two decades ago at the Australian Kathmandu outdoor adventure store. I recently had some decades-old jackets and leather satchel belonging to my father repaired and continue to use them. I recently purchased a coupe of RedOxx bags as they are built to never die. My other travel bags are Eagle Creek which are similarly over-built. I've been using the same Explorer brand winter socks for the last 15-odd years, which can be bought cheaply in Australian supermarkets and I've never had a pair fade or wear out.
I'm sure there is stuff lurking in my drawers that I could add to the list, but this is all I can think of at the moment.
