"A used broom, but it is still in good condition.
Has a rather long handle.."
The Broom is an item found in Prisoners of the Elder One. It is located by the door to the Dirty Room, and is used to sweep up both the Mirror Shard and the webs in Aktarise's domain (though notably not the web in the Elder One's Hideout). It also has a long reach, which can be used both to collect the Glowing Ruby in the Dirty Room, and to press the button in the fireplace in the Doll Room, though this will destroy the Broom.