I have an analog multimeter that still does the trick. It isn't the most precise tool, but it tells me if my batteries are flat and when I have a short on a component. Great tool, probably 50 years old now and I wouldn't touch a high voltage circuit with it but it does what I need it to do.

All my vehicles. Slide rules. Drafting table & drafting equipment. Fountain pens. Typewriters. Tanker desks. Cutlery, pots, pans, the fancy dishes (Thomas Rosenthal Arcta, close to 60yo), a fair number of tools, a few pieces of furniture. A large number of hardcover books. And likely a whole bunch of stuff I have forgotten is that old.

A lot of the MP3 files I listen to.

take your pick

• until recently I was using a record player from 1970.
• I regularly play Victrolas from as far back as 1902.
• my house itself was built in 1900.
• the HVAC for half my house was manufactured in 1987.
• the toilet in my downstairs bathroom was manufactured in 1927.
• the wiring in my house is old knob and tube from the 1930s. some of the switches are also from around that era.
• other wiring is from the 1950s.
• the doors and doorknobs are from 1900, though it seems I am the first to perform any maintenance on them in over 100 years.
• I have an original NES set up in my office from 1987 that I or my kids play
• one of my refrigerators was manufactured in 1997

the list is endless.

Turned 30 this year. Used to make coffee 1-2 times per day, every day since it was bought new in 1996.

They still sell them. They retail for AUD$1000.

My electric stove/oven has been in my apartment since 1993, it's getting replaced on Thursday. When I moved in 10 years ago they asked if I wanted to replace it but didn't see a reason to if it still worked fine, it had a good run and I've cooked so much on it but it has gotten real bad lately so sadly it has to go. Excited to get a glass top one (not induction) with 4 cooking zones, my old one only has 3.

Realistic Lab 400 turntable.

For those who don't know Realistic is an old Radio Shack brand. Because their users were tech savvy they came with full repair manuals detailing schematics, parts lists, assembly diagrams, etc...

This all makes it extremely easy to repair. I recently replaced the capacitors after it became apparent the direct drive was unstable. There was no question what I needed to order or where exactly it needed to go.

I will likely have it until the day I die.

My tabletop radio was made in 1958, it's still in perfect working order.

My entire living room audio setup is from the early 1970's.

Our kitchen has a Kenwood mixer/multi-apparatus from 1982, I changed the motor grease ~10 years ago and it works like new. Most of our kitchenware is inherited and at least 50 years old.

My oldest guitar is from 1950's and the newest maybe late 1990's.

Now that I've come to think of it, most part of the things I own and actively use actually predate the 1990's.

Many kitchen and furniture items but if you are talking about things that usually go obsolete, a CRT computer monitor from 1984 (Commodore 1702).

Kitchen utensils, Cupboards, furnitures, framed pictures, our car & some tools.

I have swiss army knife, it's 19 years old so not quite 20, i use it everyday. I take it on every longer journey and there's virtually no situation where it doesn't help in some way... even if it's the silly toothpick, I'm always happy to have it.

I have my grandparents cookware.

That pyrex and fireking stuff is legendary.

Everything except (some) food and water.

I have a living room table that dad made over 40 years ago.

The doors.

A Tupperware yellow strainer.

The janky fluorescent anglepoise desk lamp. It's about 30 years old and I've changed the bulb once.

Ooh I love this. I started with nothing less than 20 years ago so I don't have much that old, but my Playstation 2 still gets used on occasion

French Press. It was my grandmother's, kept it after she died.

The brand, Melior, was bought by Bodum in 1991, and all French Press production went under the Bodum brand (the old Melior model became what is now known as the "Chambord" line), so it is at least 35 years old, possibly older.

I contacted Bodum to know if they could give me an approximate age, but they couldn't (or didn't want to bother searching). All I know it is a version with Pyrex glass, which may help a knowledgeable person to more precisely date it, but I kinda put my curiosity on pause for the time being.

Other than that, some of my grandfather's vinyls are quite old too (at least one of them is from the 80's), and I got some 20+ yo cassettes, some old mixtapes (back when mixtapes where actual tapes 😆).

I have an old Caban which is probably at least 40 years old (was my grandfather's, once again).

Oh, and some kitchen tools made in West Germany 😆.

I have an upright piano that was made in 1914.

In retrospect I wish I had gotten a newer/smaller piano… that thing weighs as much as a small car and it’s volume is more appropriate for a concert hall than a house.

We got it from a piano restoration company that sold it to us for just the cost of moving it because they have too many ancient uprights that no one wants.

If I had to pick one, it’s my Gameboy. I use that the most.

There’s also: probably half of my books, most of my cameras, my old consoles, my sewing machine, and there’s probably more stuff. I’m kind of obsessed with old things.

My computer desk is a hand-me-down from my dad, it was already old 20 years ago...

Iron skillets are the oldest thing I personally bought and still use, going on 40 years for the oldest.

But I also have some furniture from my grandma, 1930s-40s, and the house I live in was mostly built in the 1940s.

The tube TV in my bedroom. My bed and the Sears mattress on it. Most of our furniture, save the kitchen table and one of our bookshelves. Our SNES & N64.

I have clothes that are over 20 years old that I keep thinking I might lose with weight to for into again.

My 23 year old pickup just kicked the bucket this spring.

My GE water heater has a metal plate on it stating it meets all the new 1945 safety regulations.

My house was built in 1875, according to the local historical society, or 1912 according to the county. I suspect the difference is that in 1875 you didn't need to file building permits with the county, but by the time they put the addition on in 1912 you did.

My Bachelor's Degree is over 20 years old, but I've never used that.

The table by my bed that i put my laptop on to watch tv in bed.

Although it is still not around we were given a toaster for our wedding that was given to a couple for their wedding back in the forties. We had it for several years until one of our friends decided to cook a bagel in it and melted the cord. I ended up taking it apart and replaced the cord. We had it another several years until it was lost in a move. I like to think it is somewhere still toasting 80 years later.

Cuisinart Food Processor. Use it all the time. Got it as a gift from my mom in college. Just harvested a ton of basil last night and made "pesto pucks" to freeze to use over the winter.

Loads of things.

Kitchen: My stove us 30+ years old. Loads of kitchen gadgets, too. The older knife set my wife uses (she is too afraid to use mine), but mine might touch the 20 years, too.

Living room: The table is 30+, as well as the side table I made.

Basement: The shelves I built 30ish years ago - and they will probably last longest, as they are welded from steel.

And thousands of other things.

I have a cheese shredder that is from before the 1980s. I'm not sure what its actual age is. It looks and feels like something from the Gold Rush days. It's metal, it's got that old timey metal look to it (not polished), it has a wooden handle, and it basically spins a circular shredder with a hand crank. It's probably from the 1950s. You can't put a lot of cheese in it, but it works well.

Our kitchen table is over 20 years old, but we don't use it as a kitchen table. Mostly it just collects junk. We eat in front of the TV like a lot of modern couples.

I recently found a hat I got 30 years ago and still have. I don't wear hats though, so it's been mostly unused.

I think the PS3 is 20 Years old. If not 20 then it should be there this year. I use it almost daily for gaming. It’s primarily my Minecraft, Uncharted, and LBP Machine though

NES, SNES, Genesis, N64, Wii, a cuckoo clock, that kind of cat clock with the eyes and tail that go side to side, a coffee grinder with the handle, my husband.