Whisky
Single malt and blended, grain and bourbon, rye, Japanese, Irish, and everything the rest of the world has started distilling in the last twenty years. Official bottlings and independents alike, from a supermarket blend with a story to a closed distillery in the wrong decade.
Age is neither a requirement nor a disqualification. A bottle from last year sells perfectly well if it is the right one, and a dusty forty-year-old sells because it is exactly that. Register it and it goes into the next auction with a deadline you can still make.