I've got one I keep running in a Bukkit docker container that's now 14ish years old.

Many many memories, signs with stuff written by people no longer in my life, good and bad.

My first one was on the console edition so I can't play that anymore. I've been playing my current one for two-ish years now but I kind of regret picking the large biomes world types (though it can be quite cool with the distant horizons mod).