Mechanical Squirrel Box



The Mechanical Squirrel Box item summons and dismisses a Mechanical Squirrel, a squirrel companion that follows you around, meaning it is a non-combat pet and will not aid you in battle.

Source
Mechanical Squirrel Box is crafted by Engineers with a skill level of 75. It is learned from Schematic: Mechanical Squirrel Box which drops off creatures with their levels in the 10s-20s.