In terms of things passed down, I have the original Wii my parents bought for us on Christmas of 2008. In terms of consoles, I have a Nintendo 64 I got off eBay to play the collection of cartridges we had been accruing since the late 90s.
As for the oldest antique item, I have some mechanical slide calculators, two from Australia, one from Japan, and one from the US. No idea the exact years of manufacturing, but the US one is a Tasco Pocket Arithmometer, which I think ceased manufacturing in the early 1900s ( it's been a bit since I last researched it.)
I have a couple of original Nintendos (NES) lying around. Including the one from when I was kids, missing its door because my sibling would toss controllers at it when they lost.
Those controllers are solid.
Also a few dozen cartridges to go with it. Nothing of value as far as I know but future family heirlooms.
I wish I still had the original N64 controllers. The nintendium shells they were made out of were thicker, heftier. Now I've just got these off-brand ones that don't feel as good.
Tell you what, though - the joysticks are just as floppy as the originals we had. I'll eventually get those GameCube joysticks to upgrade them.