An orange corduroy chair from the early 60’s. My mom tried to get rid of that hideous chair during her marriage to my dad, and I inherited it when I moved out. My ex-wife tried to get rid of it during our entire marriage, and I still have it, and not her. Sadly, the cats have attacked it with vigor and I may actually have to throw it out some day.
I don’t think we currently have anything that counts as tacky. When my wife and I moved in together, I gave my old roommate my beloved Jimmy Hendrix wearing a green pimp hat while playing a Strat, lovingly rendered on black velvet and sized like a saint icon to commemorate our years of living together.