Two lines are all it takes here, and they land hard. The poem takes the old childhood rhyme "sticks and stones" and turns it toward a person: "anything can be a weapon / in your hands." The "you" is never named, but the speaker is clearly talking to someone who can make harm out of almost nothing.
The title, "Ancient Artifact," adds an odd twist. It suggests that sticks and stones are relics, the first tools of violence, yet the poem points out that the danger doesn't live in the objects. It lives in the person holding them. A stick is just a stick until this particular "you" picks it up.
The speaker sounds wary, maybe hurt, and perhaps accusing. Judging by the wording, the "weapon" could be literal, but it could just as easily be words, since the rhyme it echoes is about words and bones. The mood is cold and tense, helped by the lowercase, stripped-down style, which makes the accusation feel quiet, steady, and hard to argue with.