My old NES is packed away in a closet, that one is from 1986...
And, a very badly mangled Amiga A500 from 1987 - although the motherboard was replaced in that one at some later point so it's not actually quite that old. Just the casing, keyboard and that stuff. Still worked though, last I used it, maybe 15 years ago now... Wish I'd taken better care of it way back when. Stupid me!
I also have a color laser printer which is from, uh, 2006, I think, but I never really use it. Don't have much need for paper printouts... Last time I did, years ago, it was wonky and would not grab papers on its own out of the paper magazine anymore. You had to hand-feed it through the slot on the front.
The printer I bought together with a monstrous Dell XPS gaming PC (not a very good buy), all I have left of that one is the dual NV GTX 8800 GPUs that came with it. Neither of those boards work properly anymore, one causes random system crashes and the other displays repeating green pixel garbage on the screen (as well as random system crashes...)
Of the stuff I use at least somewhat regularly it's probably my PS3 "Slim" (not very slim though) which is oldest, not sure when I bought that one actually. 2010 maybe? Can't even remember when the Slim model first came out. I wouldn't have bought it if my launch PS3 hadn't YLODed on me...
My Apple Thunderbolt Display and Time Capsule are both from 2011 and I use both all the time, so they're pretty old now too by modern consumer electronics standards (had a Sony Trinitron 14" TV once that I used for 18 years straight if not even longer...)