Antiquity's Roast

Oobleck's Thermos is Bartholomew Oobleck's weapon of choice. It is first shown in Mountain Glenn, as Oobleck prepares to lead Team RWBY to rescue Ruby Rose.

Description
Oobleck's Thermos takes the form of an everyday thermos. It's small, green in coloration, and is functional in the traditional use of putting a beverage inside it, as demonstrated by Oobleck himself during his lectures.