I have 40 year old Moody Blues T-shirts.....lol And yes, I still on occasion use them! I also have my grandmother's pizza pans from her restaurant. Use those a LOT!
I have a Werndle rifle. Swiss. 1859. Uh, no I'm not gonna shoot it. I like my fingers.
Tools. All of my furniture. Well, most. Closing in on 100 and 120 years.
I refinish. Destroy all value. But I like it.
The DNA linking me to all life on Earth. But seriously, probably my bed, Atari 2600, I have older computers (such as Apple II computers, but I don't use them), but I currently have my slot-loading G3 Bondi Blue iMac on my desk from 1998. I still have my baggy JNCO jeans and Airwalk One shoes from the mid-90s Sony cassette tape/radio (although I don't use it very often). Original Game Boy and Atari Lynx (both from 1989), and I can't think of anything else right now.
I also have old stuff my grandparents gave me, but I have no idea how old they are.