'Kay, I'll tell you about my favorite artifact.The item itself is nothing especially fancy, it's the story linked to it's creation that made me remember it when I saw this thread.
EDIT: Removed all of the off-topic. Seriously what was I thinking when writing this? Let's drown everyone in useless information and colour some stuff yellow so it looks less boring?
At the time relevant things started to happen about half of my population were children. And because they were drinking up all of the booze, throwing parties all the time and never did something useful besides getting snatched I decided to get rid of them all at once by walling them in with a goose and no food. While they were walled in, three of them hit puberty and started beating up the others until only one was left. I let him out, because why not? It isn't a bad idea to release a huge pile of death childrem and a premature madman at a bunch of mentally unstable dwarves, is it? Wrong.
After one year of tantrums and vampires killing my dwarves the kid gets a fell mood, crawls out of the belly of the earth, strikes down the only fisherdwarf and contructs the most awesome armorstand out of his bones.
TL;DR; 2 years old psychomaniac wrestles down an adult dwarf and makes an armorstand out of his bones. No one gives a fuck.
I later used the armorstand for my first dangerroom, which killed about five pets, causing more tantrums and casualities than the murder of 20+ children.
I live this game.