@nixCraft My whole home audio system still uses the Squeezebox/Slimserver system (with both hardware and a server).
Although one might argue my propensity to listen to baseball on an AM radio also qualifies.
@nixCraft
A USB Stick from 2010 witg 2GB storage space.
I also own an electric Samowar from the 90s, that I got from my Grandparents, but I rarely use it.
my body 
@nixCraft regularly?
uhm, probably my scientific calculator from 2015 whose design isn't that widespread anymore?
if not regularly, the oldest thing I own that still works is a GameBoy Advance from around the time I was born
@nixCraft My Commodore 64! I keep it handy and love to use them occasionally. Have had a bunch of fun with modern add-ons (SD2IEC, EasyFlash3, and a not-prone-to-blow-everything-uppy power supply).
@nixCraft Kyocera FS-1020D laser printer. Bought in 2003. In regular home use until recently in 2024. That's better lifetime than most cars. Only had to fix it twice.
Oh, and an LG CD-R/W IDE drive from around 2007, attached to my current PC via an IDE->SATA converter.
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@nixCraft
How do I decide? I have things made with old tech, but not necessarily outdated.
I'll go for my USB drive. It had 32 GB storage and takes minutes to transfer a few GB worth of files (with random slowdowns in between). If not that, then my TI 32 that I need for courses.
@nixCraft I have a Kenwood Chef -- a mixer from the mid-60's (I'm guessing) that has a mixing bowl, a blender, and a meat grinder attachment. It was old when I got it in the late 80's, and still has the original two pronged plug.
Still does an excellent job kneading dough with the dough hook attachment. Just wish I could find a pasta machine that fits it.