Ivy

Ivy is an instrument dropped by the Steampunker if she is named Whitney when killed. When used, the player strums a chord depending on how far the cursor is from the player.

Trivia

 * The Steampunker's name is a reference to Cenx, a Terraria developer and wife of Redigit, who is named Whitney in real life.
 * This is one of two items which is dropped by an NPC with a special name, the other being the Green Cap dropped by a Guide named Andrew.
 * The tooltip may reference the Dead Man's Chest, which often contains a sweater of the same name.